软件工程结对作业02 软件工程的发展 软件工程的概念 软件工程的定义
软件工程
1.设计思想：
本次任务我用php实现的主要功能，默认必须有加减法。
首先，创建index.php文件，在HTML语句里创建表单，表单内容包括，出题数目，最大最小值，及其他的一些选项。
然后，创建rubric.php文件，将表单信息提交到此文件下，四则运算方法实现时调用传递过来的值。实现四则运算的方法和前几次用Java时的方法差不多，将代码做了修改和优化。将题目和答案分别放入question.txt和answer.txt文件里，以备后用。
第三，创建submitAnswer.php、acceptAnswer.php、deleteAnswer.php和judgeAnswer.php文件，分别用于在线提交答案，接收答案，删除答案和判断答案。提交的答案放在answer1.txt文件里，判断答案时通过比较answer.txt和answer1.txt文件里的内容即可。
2.源程序代码
<span> 1</span> index.<span>php
</span><span> 2</span>
<span> 3</span> <!--
<span> 4</span> start <span>date</span> 2016/3/28
<span> 5</span> completion <span>date</span> 2016/4/7
<span> 6</span><span>author Jing
</span><span> 7</span><span>this program is about four arithmetic operation
</span><span> 8</span> -->
<span> 9</span>
<span> 10</span>
<span> 11</span> <meta charset="UTF-8">
<span> 12</span> <title>四则运算出题系统</title>
<span> 13</span> <script>
<span> 14<span>function<span> check() {
<span> 15<span>var tt=/^(0|[1-9]\d*)$/<span>;
<span> 16<span>if(!tt.test(form1.<span>min.<span>value))
<span> 17<span> {
<span> 18 alert('最小值输入不合法'<span>);
<span> 19 form1.<span>min.<span>focus();
<span> 20<span>return<span>false<span>;
<span> 21<span> }
<span> 22<span>if(!tt.test(form1.<span>max.value) || (form1.<span>max.value<form1.<span>min.<span>value))
<span> 23<span> {
<span> 24 alert('最大值输入不合法'<span>);
<span> 25 form1.<span>min.<span>focus();
<span> 26<span>return<span>false<span>;
<span> 27<span> }
<span> 28<span>if(!tt.test(form1.num.value) || (form1.num.value==0<span>))
<span> 29<span> {
<span> 30 alert('出题数目输入不合法'<span>);
<span> 31 form1.num.<span>focus();
<span> 32<span>return<span>false<span>;
<span> 33<span> }
<span> 34<span>return<span>true<span>;
<span> 35<span> }
<span> 36 </script>
<span> 37</span>
<span> 38</span>
<span> 39</span> <button type="button">登录</button> <button type="button">注册</button>
<span> 40</span> <br><br>
<span> 41</span> <center>
<span> 42</span> <font color="red" size="7" face="楷体">欢迎来到小学四则运算出题系统</font> <br><br><br>
<span> 43</span><span> 44</span> <form action="rubric.php" target="_blank" method="post" name="form1">
<span> 45</span> <font color="red" size="5">默认只有两个数参与运算的加减法</font> <br><br>
<span> 46</span><span> 47</span> <font color="blue" size="4">请输入参与运算的最小数值（非负整数）</font>
<span> 48</span> <input type="text" name="min"> <br><br>
<span> 49</span><span> 50</span> <font color="blue" size="4">请输入参与运算的最大数值（非负整数且不小于最小数值）</font>
<span> 51</span> <input type="text" name="max"> <br><br>
<span> 52</span><span> 53</span> <font color="blue" size="4">请输入出题数目（正整数）</font>
<span> 54</span> <input type="text" name="num"> <br><br>
<span> 55</span><span> 56</span> <font color="blue" size="4">选择参与运算的数的个数</font>
<span> 57</span> <input type="radio" value="2" name="num1" checked>2
<span> 58</span> <input type="radio" value="3" name="num1">3
<span> 59</span> <input type="radio" value="4" name="num1">4 <br><br><!--num1中的1位1 2 3的1，不是l m n的l-->
<span> 60</span><span> 61</span> <font color="blue" size="4">选择是否加入乘法</font>
<span> 62</span> <input type="radio" value="t" name="mul"><span>是
</span><span> 63</span> <input type="radio" value="f" name="mul" checked>否 <br><br>
<span> 64</span><span> 65</span> <font color="blue" size="4">选择是否加入除法</font>
<span> 66</span> <input type="radio" value="t" name="div"><span>是
</span><span> 67</span> <input type="radio" value="f" name="div" checked>否 <br><br>
<span> 68</span><span> 69</span> <input type="submit" value="确认" name="send">
<span> 70</span> <input type="reset" value="重置" name="send">
<span> 71</span> </form>
<span> 72</span> </center>
<span> 73</span>
<span> 74</span>
<span> 75</span><span> 76</span> rubric.<span>php
</span><span> 77</span><span> 78</span>
<span> 79</span>
<span> 80</span> <meta charset="UTF-8">
<span> 81</span> <title>出题界面</title>
<span> 82</span>
<span> 83</span>
<span> 84</span><span> 85</span> <span>php
</span><span> 86</span><span>if</span>(<span>is_numeric</span>(<span>$_POST</span>["max"<span>]))
</span><span> 87</span><span> {
</span><span> 88</span><span>$max</span>=<span>$_POST</span>["max"]; <span>//</span><span>最大值</span><span> 89</span><span> }
</span><span> 90</span><span>if</span>(<span>is_numeric</span>(<span>$_POST</span>["min"<span>]))
</span><span> 91</span><span> {
</span><span> 92</span><span>$min</span>=<span>$_POST</span>["min"]; <span>//</span><span>最小值</span><span> 93</span><span> }
</span><span> 94</span><span>if</span>(<span>is_numeric</span>(<span>$_POST</span>["num"<span>]))
</span><span> 95</span><span> {
</span><span> 96</span><span>$num</span>=<span>$_POST</span>["num"]; <span>//</span><span>出题数目</span><span> 97</span><span> }
</span><span> 98</span><span>if</span>(<span>is_numeric</span>(<span>$_POST</span>["num1"<span>]))
</span><span> 99</span><span> {
</span><span>100</span><span>$num1</span>=<span>$_POST</span>["num1"]; <span>//</span><span>参与运算的个数</span><span>101</span><span> }
</span><span>102</span><span>if</span>(<span>is_string</span>(<span>$_POST</span>["mul"<span>]))
</span><span>103</span><span> {
</span><span>104</span><span>$mul</span>=<span>$_POST</span>["mul"]; <span>//</span><span>选择是否加入乘法 是t否f</span><span>105</span><span> }
</span><span>106</span><span>if</span>(<span>is_string</span>(<span>$_POST</span>["div"<span>]))
</span><span>107</span><span> {
</span><span>108</span><span>$div</span>=<span>$_POST</span>["div"]; <span>//</span><span>选择是否加入除法 是t否f</span><span>109</span><span> }
</span><span>110</span><span>111</span><span>/*</span><span> 定义数组 </span><span>*/</span><span>112</span><span>$a</span>=<span>array</span>(); <span>//</span><span>方法中使用，存储随机数字和运算符</span><span>113</span><span>$amd</span>=<span>array</span>(); <span>//</span><span>方法中使用，将算好乘/除法后的算式存入此数组</span><span>114</span><span>$b</span>=<span>array</span>(); <span>//</span><span>调用方法时使用</span><span>115</span><span>$d</span>=<span>array</span>(); <span>//</span><span>存储题目</span><span>116</span><span>$e</span>=<span>array</span>(); <span>//</span><span>存储答案</span><span>117</span><span>118</span><span>/*</span><span> Result 类用于封装结果 </span><span>*/</span><span>119</span><span>class</span><span> Result
</span><span>120</span><span> {
</span><span>121</span><span>public</span><span>$r1</span>; <span>//</span><span>$r1存储计算结果</span><span>122</span><span> }
</span><span>123</span><span>124</span><span>/*</span><span> 运算符只有加减的方法 </span><span>*/</span><span>125</span><span>function</span> addSub(<span>$min</span>,<span>$max</span>,<span>$num1</span>,<span>$result</span><span>)
</span><span>126</span><span> {
</span><span>127</span><span>$str</span>=<span>mt_rand</span>(<span>$min</span>,<span>$max</span><span>);
</span><span>128</span><span>$re</span>=<span>$str</span><span>;
</span><span>129</span><span>for</span>(<span>$i</span>=1;<span>$i</span>$num1;<span>$i</span>++<span>)
</span><span>130</span><span> {
</span><span>131</span><span>$a</span>[<span>$i</span>]= <span>mt_rand</span>(<span>$min</span>,<span>$max</span><span>);
</span><span>132</span><span>$c</span>=<span>mt_rand</span>(0,1<span>);
</span><span>133</span><span>if</span>(<span>$c</span>==0<span>)
</span><span>134</span><span> {
</span><span>135</span><span>$str</span>=<span>$str</span>." + ".<span>$a</span>[<span>$i</span><span>];
</span><span>136</span><span>$re</span>=<span>$re</span>+<span>$a</span>[<span>$i</span><span>];
</span><span>137</span><span> }
</span><span>138</span><span>if</span>(<span>$c</span>==1<span>)
</span><span>139</span><span> {
</span><span>140</span><span>$str</span>=<span>$str</span>." - ".<span>$a</span>[<span>$i</span><span>];
</span><span>141</span><span>$re</span>=<span>$re</span>-<span>$a</span>[<span>$i</span><span>];
</span><span>142</span><span> }
</span><span>143</span><span> }
</span><span>144</span><span>$result</span>->r1=<span>$re</span><span>;
</span><span>145</span><span>$str</span>=<span>$str</span>." = "<span>;
</span><span>146</span><span>return</span><span>$str</span><span>;
</span><span>147</span><span> }
</span><span>148</span><span>149</span><span>/*</span><span> 运算符为加减乘的方法 </span><span>*/</span><span>150</span><span>function</span> addSubMul(<span>$min</span>,<span>$max</span>,<span>$num1</span>,<span>$result</span><span>)
</span><span>151</span><span> {
</span><span>152</span><span>$a</span>[0]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>153</span><span>/*</span><span> 将算式中的数和运算符存入数组$a </span><span>*/</span><span>154</span><span>/*</span><span>如果此循环中在运算符左右两侧加入空格，则在后面while循环中的if条件语句中的运算符也应加空格，否则会出错</span><span>*/</span><span>155</span><span>for</span>(<span>$i</span>=1;<span>$i</span>$num1-1);<span>$i</span>=<span>$i</span>+2) <span>//</span><span>(2*$num1-1) 为算式中参与运算的数和运算符个数之和</span><span>156</span><span> {
</span><span>157</span><span>$c</span>= <span>mt_rand</span>(0, 2<span>);
</span><span>158</span><span>if</span>(<span>$c</span>==0<span>)
</span><span>159</span><span> {
</span><span>160</span><span>$a</span>[<span>$i</span>]=' + '<span>;
</span><span>161</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>162</span><span> }
</span><span>163</span><span>if</span>(<span>$c</span>==1<span>)
</span><span>164</span><span> {
</span><span>165</span><span>$a</span>[<span>$i</span>]=' - '<span>;
</span><span>166</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>167</span><span> }
</span><span>168</span><span>if</span>(<span>$c</span>==2<span>)
</span><span>169</span><span> {
</span><span>170</span><span>$a</span>[<span>$i</span>]=' x '<span>;
</span><span>171</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>172</span><span> }
</span><span>173</span><span> }
</span><span>174</span><span>/*</span><span> 将算式中的乘法算完后的算式存入数组$amd </span><span>*/</span><span>175</span><span>$i</span>=0<span>;
</span><span>176</span><span>$j</span>=0<span>;
</span><span>177</span><span>while</span>(<span>$i</span>$num1-1)) <span>//</span><span>运算符左右是否有空格应和上面的for循环保持一致</span><span>178</span><span> {
</span><span>179</span><span>if</span>(<span>$a</span>[<span>$i</span>]==' x '<span>)
</span><span>180</span><span> {
</span><span>181</span><span>$amd</span>[<span>$j</span>-1]=<span>$amd</span>[<span>$j</span>-1]*<span>$a</span>[<span>$i</span>+1<span>];
</span><span>182</span><span>$i</span>=<span>$i</span>+2<span>;
</span><span>183</span><span> }
</span><span>184</span><span>else</span><span>185</span><span> {
</span><span>186</span><span>$amd</span>[<span>$j</span>]=<span>$a</span>[<span>$i</span><span>];
</span><span>187</span><span>$j</span>++<span>;
</span><span>188</span><span>$i</span>++<span>;
</span><span>189</span><span> }
</span><span>190</span><span> }
</span><span>191</span><span>/*</span><span> 算出算式的答案$re </span><span>*/</span><span>192</span><span>$re</span>=<span>$amd</span>[0<span>];
</span><span>193</span><span>$k</span>=1<span>;
</span><span>194</span><span>while</span>(<span>$k</span>$j) <span>//</span><span>运算符左右是否有空格应和上面的for循环保持一致</span><span>195</span><span> {
</span><span>196</span><span>if</span>(<span>$amd</span>[<span>$k</span>]==' + '<span>)
</span><span>197</span><span> {
</span><span>198</span><span>$re</span>=<span>$re</span>+<span>$amd</span>[<span>$k</span>+1<span>];
</span><span>199</span><span>$k</span>=<span>$k</span>+2<span>;
</span><span>200</span><span>continue</span><span>;
</span><span>201</span><span> }
</span><span>202</span><span>if</span>(<span>$amd</span>[<span>$k</span>]==' - '<span>)
</span><span>203</span><span> {
</span><span>204</span><span>$re</span>=<span>$re</span>-<span>$amd</span>[<span>$k</span>+1<span>];
</span><span>205</span><span>$k</span>=<span>$k</span>+2<span>;
</span><span>206</span><span> }
</span><span>207</span><span> }
</span><span>208</span><span>/*</span><span> 将数组中的值连接为字符串算式$str </span><span>*/</span><span>209</span><span>$str</span>=<span>$a</span>[0<span>];
</span><span>210</span><span>for</span>(<span>$i</span>=1;<span>$i</span>$num1-1);<span>$i</span>++<span>)
</span><span>211</span><span> {
</span><span>212</span><span>$str</span>.=<span>$a</span>[<span>$i</span><span>];
</span><span>213</span><span> }
</span><span>214</span><span>$result</span>->r1=<span>$re</span><span>;
</span><span>215</span><span>$str</span>=<span>$str</span>." = "<span>;
</span><span>216</span><span>return</span><span>$str</span><span>;
</span><span>217</span><span> }
</span><span>218</span><span>219</span><span>/*</span><span> 运算符为加减除的方法 </span><span>*/</span><span>220</span><span>function</span> addSubDiv(<span>$min</span>,<span>$max</span>,<span>$num1</span>,<span>$result</span><span>)
</span><span>221</span><span> {
</span><span>222</span><span>$a</span>[0]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>223</span><span>/*</span><span> 将算式中的数和运算符存入数组$a </span><span>*/</span><span>224</span><span>for</span>(<span>$i</span>=1;<span>$i</span>$num1-1);<span>$i</span>=<span>$i</span>+2<span>)
</span><span>225</span><span> {
</span><span>226</span><span>$c</span>= <span>mt_rand</span>(0, 2<span>);
</span><span>227</span><span>if</span>(<span>$c</span>==0<span>)
</span><span>228</span><span> {
</span><span>229</span><span>$a</span>[<span>$i</span>]=' + '<span>;
</span><span>230</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>231</span><span> }
</span><span>232</span><span>if</span>(<span>$c</span>==1<span>)
</span><span>233</span><span> {
</span><span>234</span><span>$a</span>[<span>$i</span>]=' - '<span>;
</span><span>235</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>236</span><span> }
</span><span>237</span><span>if</span>(<span>$c</span>==2<span>)
</span><span>238</span><span> {
</span><span>239</span><span>$a</span>[<span>$i</span>]=' ÷ '<span>;
</span><span>240</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>241</span><span> }
</span><span>242</span><span> }
</span><span>243</span><span>/*</span><span> 将算式中的除法算完后的算式存入数组$amd </span><span>*/</span><span>244</span><span>$i</span>=0<span>;
</span><span>245</span><span>$j</span>=0<span>;
</span><span>246</span><span>while</span>(<span>$i</span>$num1-1<span>))
</span><span>247</span><span> {
</span><span>248</span><span>if</span>(<span>$a</span>[<span>$i</span>]==' ÷ '<span>)
</span><span>249</span><span> {
</span><span>250</span><span>while</span>((<span>$amd</span>[<span>$j</span>-1] % <span>$a</span>[<span>$i</span>+1]!=0) || <span>$a</span>[<span>$i</span>+1]==0 ) <span>//</span><span>避免除法有余数</span><span>251</span><span> {
</span><span>252</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>,<span>$max</span><span>);
</span><span>253</span><span> }
</span><span>254</span><span>$amd</span>[<span>$j</span>-1]=<span>$amd</span>[<span>$j</span>-1]/<span>$a</span>[<span>$i</span>+1<span>];
</span><span>255</span><span>$i</span>=<span>$i</span>+2<span>;
</span><span>256</span><span> }
</span><span>257</span><span>else</span><span>258</span><span> {
</span><span>259</span><span>$amd</span>[<span>$j</span>]=<span>$a</span>[<span>$i</span><span>];
</span><span>260</span><span>$j</span>++<span>;
</span><span>261</span><span>$i</span>++<span>;
</span><span>262</span><span> }
</span><span>263</span><span> }
</span><span>264</span><span>/*</span><span> 算出算式的答案$re </span><span>*/</span><span>265</span><span>$re</span>=<span>$amd</span>[0<span>];
</span><span>266</span><span>$k</span>=1<span>;
</span><span>267</span><span>while</span>(<span>$k</span>$j<span>)
</span><span>268</span><span> {
</span><span>269</span><span>if</span>(<span>$amd</span>[<span>$k</span>]==' + '<span>)
</span><span>270</span><span> {
</span><span>271</span><span>$re</span>=<span>$re</span>+<span>$amd</span>[<span>$k</span>+1<span>];
</span><span>272</span><span>$k</span>=<span>$k</span>+2<span>;
</span><span>273</span><span>continue</span><span>;
</span><span>274</span><span> }
</span><span>275</span><span>if</span>(<span>$amd</span>[<span>$k</span>]==' - '<span>)
</span><span>276</span><span> {
</span><span>277</span><span>$re</span>=<span>$re</span>-<span>$amd</span>[<span>$k</span>+1<span>];
</span><span>278</span><span>$k</span>=<span>$k</span>+2<span>;
</span><span>279</span><span> }
</span><span>280</span><span> }
</span><span>281</span><span>282</span><span>/*</span><span> 将算式放入字符串$str </span><span>*/</span><span>283</span><span>$str</span>=<span>$a</span>[0<span>];
</span><span>284</span><span>for</span>(<span>$i</span>=1;<span>$i</span>$num1-1);<span>$i</span>++<span>)
</span><span>285</span><span> {
</span><span>286</span><span>$str</span>.=<span>$a</span>[<span>$i</span><span>];
</span><span>287</span><span> }
</span><span>288</span><span>$result</span>->r1=<span>$re</span><span>;
</span><span>289</span><span>$str</span>=<span>$str</span>." = "<span>;
</span><span>290</span><span>return</span><span>$str</span><span>;
</span><span>291</span><span> }
</span><span>292</span><span>293</span><span>/*</span><span> 运算符为加减乘除的方法 </span><span>*/</span><span>294</span><span>function</span> addSubMulDiv(<span>$min</span>,<span>$max</span>,<span>$num1</span>,<span>$result</span><span>)
</span><span>295</span><span> {
</span><span>296</span><span>$a</span>[0]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>297</span><span>/*</span><span> 将算式中的数和运算符存入数组$a </span><span>*/</span><span>298</span><span>for</span>(<span>$i</span>=1;<span>$i</span>$num1-1);<span>$i</span>=<span>$i</span>+2<span>)
</span><span>299</span><span> {
</span><span>300</span><span>$c</span>= <span>mt_rand</span>(0, 3<span>);
</span><span>301</span><span>if</span>(<span>$c</span>==0<span>)
</span><span>302</span><span> {
</span><span>303</span><span>$a</span>[<span>$i</span>]=' + '<span>;
</span><span>304</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>305</span><span> }
</span><span>306</span><span>if</span>(<span>$c</span>==1<span>)
</span><span>307</span><span> {
</span><span>308</span><span>$a</span>[<span>$i</span>]=' - '<span>;
</span><span>309</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>310</span><span> }
</span><span>311</span><span>if</span>(<span>$c</span>==2<span>)
</span><span>312</span><span> {
</span><span>313</span><span>$a</span>[<span>$i</span>]=' x '<span>;
</span><span>314</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>315</span><span> }
</span><span>316</span><span>if</span>(<span>$c</span>==3<span>)
</span><span>317</span><span> {
</span><span>318</span><span>$a</span>[<span>$i</span>]=' ÷ '<span>;
</span><span>319</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>, <span>$max</span><span>);
</span><span>320</span><span> }
</span><span>321</span><span> }
</span><span>322</span><span>/*</span><span> 将算式中的除法算完后的算式存入数组$amd </span><span>*/</span><span>323</span><span>$i</span>=0<span>;
</span><span>324</span><span>$j</span>=0<span>;
</span><span>325</span><span>while</span>(<span>$i</span>$num1-1<span>))
</span><span>326</span><span> {
</span><span>327</span><span>if</span>(<span>$a</span>[<span>$i</span>]==' x '<span>)
</span><span>328</span><span> {
</span><span>329</span><span>$amd</span>[<span>$j</span>-1]=<span>$amd</span>[<span>$j</span>-1]*<span>$a</span>[<span>$i</span>+1<span>];
</span><span>330</span><span>$i</span>=<span>$i</span>+2<span>;
</span><span>331</span><span> }
</span><span>332</span><span>else</span><span>if</span>(<span>$a</span>[<span>$i</span>]==' ÷ '<span>)
</span><span>333</span><span> {
</span><span>334</span><span>while</span>((<span>$amd</span>[<span>$j</span>-1] % <span>$a</span>[<span>$i</span>+1]!=0) || <span>$a</span>[<span>$i</span>+1]==0 ) <span>//</span><span>避免除法有余数</span><span>335</span><span> {
</span><span>336</span><span>$a</span>[<span>$i</span>+1]= <span>mt_rand</span>(<span>$min</span>,<span>$max</span><span>);
</span><span>337</span><span> }
</span><span>338</span><span>$amd</span>[<span>$j</span>-1]=<span>$amd</span>[<span>$j</span>-1]/<span>$a</span>[<span>$i</span>+1<span>];
</span><span>339</span><span>$i</span>=<span>$i</span>+2<span>;
</span><span>340</span><span> }
</span><span>341</span><span>else</span><span>342</span><span> {
</span><span>343</span><span>$amd</span>[<span>$j</span>]=<span>$a</span>[<span>$i</span><span>];
</span><span>344</span><span>$j</span>++<span>;
</span><span>345</span><span>$i</span>++<span>;
</span><span>346</span><span> }
</span><span>347</span><span> }
</span><span>348</span><span>/*</span><span> 算出算式的答案$re </span><span>*/</span><span>349</span><span>$re</span>=<span>$amd</span>[0<span>];
</span><span>350</span><span>$k</span>=1<span>;
</span><span>351</span><span>while</span>(<span>$k</span>$j<span>)
</span><span>352</span><span> {
</span><span>353</span><span>if</span>(<span>$amd</span>[<span>$k</span>]==' + '<span>)
</span><span>354</span><span> {
</span><span>355</span><span>$re</span>=<span>$re</span>+<span>$amd</span>[<span>$k</span>+1<span>];
</span><span>356</span><span>$k</span>=<span>$k</span>+2<span>;
</span><span>357</span><span>continue</span><span>;
</span><span>358</span><span> }
</span><span>359</span><span>if</span>(<span>$amd</span>[<span>$k</span>]==' - '<span>)
</span><span>360</span><span> {
</span><span>361</span><span>$re</span>=<span>$re</span>-<span>$amd</span>[<span>$k</span>+1<span>];
</span><span>362</span><span>$k</span>=<span>$k</span>+2<span>;
</span><span>363</span><span> }
</span><span>364</span><span> }
</span><span>365</span><span>/*</span><span> 将算式放入字符串$str </span><span>*/</span><span>366</span><span>$str</span>=<span>$a</span>[0<span>];
</span><span>367</span><span>for</span>(<span>$i</span>=1;<span>$i</span>$num1-1);<span>$i</span>++<span>)
</span><span>368</span><span> {
</span><span>369</span><span>$str</span>.=<span>$a</span>[<span>$i</span><span>];
</span><span>370</span><span> }
</span><span>371</span><span>$result</span>->r1=<span>$re</span><span>;
</span><span>372</span><span>$str</span>=<span>$str</span>." = "<span>;
</span><span>373</span><span>return</span><span>$str</span><span>;
</span><span>374</span><span> }
</span><span>375</span><span>376</span><span>$r</span>= <span>new</span><span> Result();
</span><span>377</span><span>378</span><span>/*</span><span> 两个数的加减法 </span><span>*/</span><span>379</span><span>if</span>((<span>$num1</span>==2) && (<span>$mul</span>=='f') && (<span>$div</span>=='f'<span>))
</span><span>380</span><span> {
</span><span>381</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>382</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>383</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>384</span><span> {
</span><span>385</span><span>$j</span>=0<span>;
</span><span>386</span><span>$bool</span>=<span>true</span><span>;
</span><span>387</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>388</span><span>while</span>((<span>$r</span>->r1)//<span>当结果为负时，重新随机</span><span>389</span><span> {
</span><span>390</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>391</span><span> }
</span><span>392</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>避免重复</span><span>393</span><span> {
</span><span>394</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>395</span><span> {
</span><span>396</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>397</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>398</span><span> {
</span><span>399</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>400</span><span> }
</span><span>401</span><span>$j</span>=0<span>;
</span><span>402</span><span> }
</span><span>403</span><span>$j</span>++<span>;
</span><span>404</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>405</span><span> {
</span><span>406</span><span>$bool</span>=<span>false</span><span>;
</span><span>407</span><span> }
</span><span>408</span><span> }
</span><span>409</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>410</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>411</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>412</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>413</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>414</span><span> }
</span><span>415</span><span>fclose</span>(<span>$question</span><span>);
</span><span>416</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>417</span><span> }
</span><span>418</span><span>419</span><span>/*</span><span> 两个数的加减乘法 </span><span>*/</span><span>420</span><span>if</span>((<span>$num1</span>==2) && (<span>$mul</span>=='t') && (<span>$div</span>=='f'<span>))
</span><span>421</span><span> {
</span><span>422</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>423</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>424</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>425</span><span> {
</span><span>426</span><span>$j</span>=0<span>;
</span><span>427</span><span>$bool</span>=<span>true</span><span>;
</span><span>428</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>429</span><span>while</span>((<span>$r</span>->r1)//<span>当结果为负时，重新随机</span><span>430</span><span> {
</span><span>431</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>432</span><span> }
</span><span>433</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>避免重复</span><span>434</span><span> {
</span><span>435</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>436</span><span> {
</span><span>437</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>438</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>439</span><span> {
</span><span>440</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>441</span><span> }
</span><span>442</span><span>$j</span>=0<span>;
</span><span>443</span><span> }
</span><span>444</span><span>$j</span>++<span>;
</span><span>445</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>446</span><span> {
</span><span>447</span><span>$bool</span>=<span>false</span><span>;
</span><span>448</span><span> }
</span><span>449</span><span> }
</span><span>450</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>451</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>452</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>453</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>454</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>455</span><span> }
</span><span>456</span><span>fclose</span>(<span>$question</span><span>);
</span><span>457</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>458</span><span> }
</span><span>459</span><span>460</span><span>/*</span><span> 两个数的加减除法 </span><span>*/</span><span>461</span><span>if</span>((<span>$num1</span>==2) && (<span>$mul</span>=='f') && (<span>$div</span>=='t'<span>))
</span><span>462</span><span> {
</span><span>463</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>464</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>465</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>466</span><span> {
</span><span>467</span><span>$j</span>=0<span>;
</span><span>468</span><span>$bool</span>=<span>true</span><span>;
</span><span>469</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>470</span><span>while</span>((<span>$r</span>->r1)//<span>当结果为负时，重新随机</span><span>471</span><span> {
</span><span>472</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>473</span><span> }
</span><span>474</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>避免重复</span><span>475</span><span> {
</span><span>476</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>477</span><span> {
</span><span>478</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>479</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>480</span><span> {
</span><span>481</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>482</span><span> }
</span><span>483</span><span>$j</span>=0<span>;
</span><span>484</span><span> }
</span><span>485</span><span>$j</span>++<span>;
</span><span>486</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>487</span><span> {
</span><span>488</span><span>$bool</span>=<span>false</span><span>;
</span><span>489</span><span> }
</span><span>490</span><span> }
</span><span>491</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>492</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>493</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>494</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>495</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>496</span><span> }
</span><span>497</span><span>fclose</span>(<span>$question</span><span>);
</span><span>498</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>499</span><span> }
</span><span>500</span><span>501</span><span>/*</span><span> 两个数的加减乘除法 </span><span>*/</span><span>502</span><span>if</span>((<span>$num1</span>==2) && (<span>$mul</span>=='t') && (<span>$div</span>=='t'<span>))
</span><span>503</span><span> {
</span><span>504</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>505</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>506</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>507</span><span> {
</span><span>508</span><span>$j</span>=0<span>;
</span><span>509</span><span>$bool</span>=<span>true</span><span>;
</span><span>510</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>511</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>512</span><span> {
</span><span>513</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>514</span><span> }
</span><span>515</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>516</span><span> {
</span><span>517</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>518</span><span> {
</span><span>519</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>520</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>521</span><span> {
</span><span>522</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>523</span><span> }
</span><span>524</span><span>$j</span>=0<span>;
</span><span>525</span><span> }
</span><span>526</span><span>$j</span>++<span>;
</span><span>527</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>528</span><span> {
</span><span>529</span><span>$bool</span>=<span>false</span><span>;
</span><span>530</span><span> }
</span><span>531</span><span> }
</span><span>532</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>533</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>534</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>535</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>536</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>537</span><span> }
</span><span>538</span><span>fclose</span>(<span>$question</span><span>);
</span><span>539</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>540</span><span> }
</span><span>541</span><span>542</span><span>/*</span><span> 三个数的加减法 </span><span>*/</span><span>543</span><span>if</span>((<span>$num1</span>==3) && (<span>$mul</span>=='f') && (<span>$div</span>=='f'<span>))
</span><span>544</span><span> {
</span><span>545</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>546</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>547</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>548</span><span> {
</span><span>549</span><span>$j</span>=0<span>;
</span><span>550</span><span>$bool</span>=<span>true</span><span>;
</span><span>551</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>552</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>553</span><span> {
</span><span>554</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>555</span><span> }
</span><span>556</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>557</span><span> {
</span><span>558</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>559</span><span> {
</span><span>560</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>561</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>562</span><span> {
</span><span>563</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>564</span><span> }
</span><span>565</span><span>$j</span>=0<span>;
</span><span>566</span><span> }
</span><span>567</span><span>$j</span>++<span>;
</span><span>568</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>569</span><span> {
</span><span>570</span><span>$bool</span>=<span>false</span><span>;
</span><span>571</span><span> }
</span><span>572</span><span> }
</span><span>573</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>574</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>575</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>576</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>577</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>578</span><span> }
</span><span>579</span><span>fclose</span>(<span>$question</span><span>);
</span><span>580</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>581</span><span> }
</span><span>582</span><span>583</span><span>/*</span><span> 三个数的加减乘法 </span><span>*/</span><span>584</span><span>if</span>((<span>$num1</span>==3) && (<span>$mul</span>=='t') && (<span>$div</span>=='f'<span>))
</span><span>585</span><span> {
</span><span>586</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>587</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>588</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>589</span><span> {
</span><span>590</span><span>$j</span>=0<span>;
</span><span>591</span><span>$bool</span>=<span>true</span><span>;
</span><span>592</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>593</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>594</span><span> {
</span><span>595</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>596</span><span> }
</span><span>597</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>598</span><span> {
</span><span>599</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>600</span><span> {
</span><span>601</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>602</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>603</span><span> {
</span><span>604</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>605</span><span> }
</span><span>606</span><span>$j</span>=0<span>;
</span><span>607</span><span> }
</span><span>608</span><span>$j</span>++<span>;
</span><span>609</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>610</span><span> {
</span><span>611</span><span>$bool</span>=<span>false</span><span>;
</span><span>612</span><span> }
</span><span>613</span><span> }
</span><span>614</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>615</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>616</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>617</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>618</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>619</span><span> }
</span><span>620</span><span>fclose</span>(<span>$question</span><span>);
</span><span>621</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>622</span><span> }
</span><span>623</span><span>624</span><span>/*</span><span> 三个数的加减除法 </span><span>*/</span><span>625</span><span>if</span>((<span>$num1</span>==3) && (<span>$mul</span>=='f') && (<span>$div</span>=='t'<span>))
</span><span>626</span><span> {
</span><span>627</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>628</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>629</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>630</span><span> {
</span><span>631</span><span>$j</span>=0<span>;
</span><span>632</span><span>$bool</span>=<span>true</span><span>;
</span><span>633</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>634</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>635</span><span> {
</span><span>636</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>637</span><span> }
</span><span>638</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>639</span><span> {
</span><span>640</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>641</span><span> {
</span><span>642</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>643</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>644</span><span> {
</span><span>645</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>646</span><span> }
</span><span>647</span><span>$j</span>=0<span>;
</span><span>648</span><span> }
</span><span>649</span><span>$j</span>++<span>;
</span><span>650</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>651</span><span> {
</span><span>652</span><span>$bool</span>=<span>false</span><span>;
</span><span>653</span><span> }
</span><span>654</span><span> }
</span><span>655</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>656</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>657</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>658</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>659</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>660</span><span> }
</span><span>661</span><span>fclose</span>(<span>$question</span><span>);
</span><span>662</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>663</span><span> }
</span><span>664</span><span>665</span><span>/*</span><span> 三个数的加减乘除法 </span><span>*/</span><span>666</span><span>if</span>((<span>$num1</span>==3) && (<span>$mul</span>=='t') && (<span>$div</span>=='t'<span>))
</span><span>667</span><span> {
</span><span>668</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>669</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>670</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>671</span><span> {
</span><span>672</span><span>$j</span>=0<span>;
</span><span>673</span><span>$bool</span>=<span>true</span><span>;
</span><span>674</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>675</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>676</span><span> {
</span><span>677</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>678</span><span> }
</span><span>679</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>680</span><span> {
</span><span>681</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>682</span><span> {
</span><span>683</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>684</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>685</span><span> {
</span><span>686</span><span>$b</span>[<span>$i</span>]= addSubMulDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>687</span><span> }
</span><span>688</span><span>$j</span>=0<span>;
</span><span>689</span><span> }
</span><span>690</span><span>$j</span>++<span>;
</span><span>691</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>692</span><span> {
</span><span>693</span><span>$bool</span>=<span>false</span><span>;
</span><span>694</span><span> }
</span><span>695</span><span> }
</span><span>696</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>697</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>698</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>699</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>700</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>701</span><span> }
</span><span>702</span><span>fclose</span>(<span>$question</span><span>);
</span><span>703</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>704</span><span> }
</span><span>705</span><span>706</span><span>/*</span><span> 四个数的加减法 </span><span>*/</span><span>707</span><span>if</span>((<span>$num1</span>==4) && (<span>$mul</span>=='f') && (<span>$div</span>=='f'<span>))
</span><span>708</span><span> {
</span><span>709</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>710</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>711</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>712</span><span> {
</span><span>713</span><span>$j</span>=0<span>;
</span><span>714</span><span>$bool</span>=<span>true</span><span>;
</span><span>715</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>716</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>717</span><span> {
</span><span>718</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>719</span><span> }
</span><span>720</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>721</span><span> {
</span><span>722</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>723</span><span> {
</span><span>724</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>725</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>726</span><span> {
</span><span>727</span><span>$b</span>[<span>$i</span>]= addSub(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>728</span><span> }
</span><span>729</span><span>$j</span>=0<span>;
</span><span>730</span><span> }
</span><span>731</span><span>$j</span>++<span>;
</span><span>732</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>733</span><span> {
</span><span>734</span><span>$bool</span>=<span>false</span><span>;
</span><span>735</span><span> }
</span><span>736</span><span> }
</span><span>737</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>738</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>739</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>740</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>741</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>742</span><span> }
</span><span>743</span><span>fclose</span>(<span>$question</span><span>);
</span><span>744</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>745</span><span> }
</span><span>746</span><span>747</span><span>/*</span><span> 四个数的加减乘法 </span><span>*/</span><span>748</span><span>if</span>((<span>$num1</span>==4) && (<span>$mul</span>=='t') && (<span>$div</span>=='f'<span>))
</span><span>749</span><span> {
</span><span>750</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>751</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>752</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>753</span><span> {
</span><span>754</span><span>$j</span>=0<span>;
</span><span>755</span><span>$bool</span>=<span>true</span><span>;
</span><span>756</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>757</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>758</span><span> {
</span><span>759</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>760</span><span> }
</span><span>761</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>762</span><span> {
</span><span>763</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>764</span><span> {
</span><span>765</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>766</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>767</span><span> {
</span><span>768</span><span>$b</span>[<span>$i</span>]= addSubMul(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>769</span><span> }
</span><span>770</span><span>$j</span>=0<span>;
</span><span>771</span><span> }
</span><span>772</span><span>$j</span>++<span>;
</span><span>773</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>774</span><span> {
</span><span>775</span><span>$bool</span>=<span>false</span><span>;
</span><span>776</span><span> }
</span><span>777</span><span> }
</span><span>778</span><span>echo</span> "( ".(<span>$i</span>+1)." ) ".<span>$b</span>[<span>$i</span>]."<br><br>"<span>;
</span><span>779</span><span>$d</span>[<span>$i</span>]=<span>$b</span>[<span>$i</span>]."\n"<span>;
</span><span>780</span><span>$e</span>[<span>$i</span>]=<span>$r</span>->r1."\n"<span>;
</span><span>781</span><span>fwrite</span>(<span>$question</span>,<span>$d</span>[<span>$i</span><span>]);
</span><span>782</span><span>fwrite</span>(<span>$answer</span>,<span>$e</span>[<span>$i</span><span>]);
</span><span>783</span><span> }
</span><span>784</span><span>fclose</span>(<span>$question</span><span>);
</span><span>785</span><span>fclose</span>(<span>$answer</span><span>);
</span><span>786</span><span> }
</span><span>787</span><span>788</span><span>/*</span><span> 四个数的加减除法 </span><span>*/</span><span>789</span><span>if</span>((<span>$num1</span>==4) && (<span>$mul</span>=='f') && (<span>$div</span>=='t'<span>))
</span><span>790</span><span> {
</span><span>791</span><span>$question</span> = <span>fopen</span>("question.txt", "w"<span>);
</span><span>792</span><span>$answer</span>= <span>fopen</span>("answer.txt", "w"<span>);
</span><span>793</span><span>for</span>(<span>$i</span>=0;<span>$i</span>$num;<span>$i</span>++<span>)
</span><span>794</span><span> {
</span><span>795</span><span>$j</span>=0<span>;
</span><span>796</span><span>$bool</span>=<span>true</span><span>;
</span><span>797</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>798</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>799</span><span> {
</span><span>800</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>801</span><span> }
</span><span>802</span><span>while</span>((<span>$bool</span>) && (<span>$i</span>!=0))<span>//</span><span>判断重复</span><span>803</span><span> {
</span><span>804</span><span>while</span>(<span>$b</span>[<span>$i</span>]==<span>$b</span>[<span>$j</span><span>])
</span><span>805</span><span> {
</span><span>806</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>807</span><span>while</span>((<span>$r</span>->r1)//<span>结果为负，重新出题</span><span>808</span><span> {
</span><span>809</span><span>$b</span>[<span>$i</span>]= addSubDiv(<span>$min</span>, <span>$max</span>, <span>$num1</span>, <span>$r</span><span>);
</span><span>810</span><span> }
</span><span>811</span><span>$j</span>=0<span>;
</span><span>812</span><span> }
</span><span>813</span><span>$j</span>++<span>;
</span><span>814</span><span>if</span>(<span>$j</span>==<span>$i</span><span>)
</span><span>815</span><span> {
</span><span>816</span><span>$bool</span>=<span>false</span><span>;
</span><span>817</span><span> </span>Nach dem Login kopieren
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Entdecken Sie die vielversprechendsten Karrieren in der Python-Programmierbranche
Sep 08, 2023 pm 02:36 PM
Entdecken Sie die vielversprechendsten Beschäftigungsmöglichkeiten in der Python-Programmierbranche. Mit der rasanten Entwicklung der Informationstechnologie boomt die Programmierbranche und bietet Arbeitssuchenden eine Vielzahl von Beschäftigungsmöglichkeiten. Unter vielen Programmiersprachen ist Python aufgrund seiner Einfachheit, leichten Erlernbarkeit, leistungsstarken Funktionen und breiten Anwendungsmöglichkeiten zu einer der beliebtesten Sprachen geworden. In diesem Artikel werden die vielversprechendsten Jobs in der Python-Programmierbranche untersucht und einige Codebeispiele gegeben. Python-Entwicklungsingenieur Python-Entwicklungsingenieur ist die häufigste und gefragteste Berufsbezeichnung
Neun häufige Fehler, die Datenwissenschaftler bei der Verwendung von Python machen
Apr 11, 2023 pm 09:07 PM
Best Practices werden aus Fehlern gelernt. Deshalb haben wir hier einige der häufigsten Fehler zusammengefasst, auf die wir stoßen, und Methoden, Ideen und Ressourcen bereitgestellt, wie wir sie am besten beheben können. 1. Der Verzicht auf die Verwendung einer virtuellen Umgebung ist an sich kein Programmierproblem, aber ich halte es dennoch für eine sehr gute Praxis, die Umgebung für jede Art von Projekt zu isolieren. Warum für jedes Projekt eine eigene Umgebung verwenden? Der erste Grund ist das Problem der Python-eigenen Paketverwaltung. Wir möchten Konflikte zwischen Paketen und Versionen minimieren. Ein weiterer Grund ist, dass unser Code und unsere Abhängigkeiten mithilfe einer virtuellen Umgebung, beginnend mit Anaconda oder Pipenv, problemlos an jedem Ort bereitgestellt werden können. Wenn Sie tiefer gehen möchten, ist Docker die erste Wahl. 2. Übermäßiger Gebrauch von J
Ratschläge zur Python-Entwicklung: Beherrschen und wenden Sie die besten Software-Engineering-Praktiken an
Nov 23, 2023 am 09:08 AM
Python wird als höhere Programmiersprache häufig in Bereichen wie der Entwicklung von Webanwendungen, Datenwissenschaft und künstlicher Intelligenz eingesetzt. Obwohl Python einfach und leicht zu erlernen ist, wird die Komplexität der Softwareentwicklung mit zunehmendem Projekt immer bedeutender. Daher ist es von entscheidender Bedeutung, die besten Software-Engineering-Praktiken während der Python-Entwicklung zu beherrschen und anzuwenden. In diesem Artikel behandeln wir einige Ratschläge zur Python-Entwicklung, die Entwicklern helfen sollen, die Leistungsfähigkeit von Python effektiver zu nutzen und gleichzeitig Fehler und schlechte Praktiken zu vermeiden.
Wie hoch ist bei einem Softwareprojekt der größte Anteil an der Gesamtarbeitslast?
Jan 22, 2021 am 11:54 AM
Bei einem Softwareprojekt sind die Aufgaben, die den größten Prozentsatz der Gesamtarbeitslast ausmachen: Testen und Debuggen. Der Zweck des Testens besteht darin, Fehler im Programm zu finden, und der Zweck des Debuggens besteht darin, Probleme im Programm zu lokalisieren und zu lösen. Das Testen läuft über den gesamten Software-Lebenszyklus, und das Debuggen findet im Allgemeinen während der Entwicklungsphase statt.
Wichtige Schritte, um ein großartiger Java-Ingenieur zu werden
Feb 03, 2024 am 08:36 AM
Wie wird man ein guter Java-Ingenieur? Als weit verbreitete Programmiersprache im Bereich der Softwareentwicklung ist Java zum Ziel vieler Entwickler geworden. Wie können Sie als Java-Ingenieur ein ausgezeichneter Java-Ingenieur werden? In diesem Artikel werden drei Aspekte besprochen: Lernmaterialien, Programmierpraxis und kontinuierliches Lernen. Zunächst einmal sind Lernmaterialien entscheidend, um ein guter Java-Ingenieur zu werden. Es ist wichtig, die grundlegendsten Einführungsmaterialien für Java zu erlernen. Sie können das klassische Java lesen
Vertieftes Verständnis der Programmierphilosophie und Softwareentwicklung der Go-Sprache
Nov 30, 2023 am 09:25 AM
Verstehen Sie die Programmierphilosophie und Softwareentwicklung der Go-Sprache genau. Als aufstrebende Programmiersprache hat die Go-Sprache aufgrund ihrer Einfachheit, Effizienz und Zuverlässigkeit immer mehr Aufmerksamkeit und Liebe bei Entwicklern auf sich gezogen. Es wird nicht nur häufig in internen Projekten von Google eingesetzt, sondern hat auch in verschiedenen Bereichen hervorragende Entwicklungsergebnisse erzielt. Um ein tiefes Verständnis der Programmierphilosophie und des Software-Engineerings der Go-Sprache zu erlangen, müssen wir von ihren Designprinzipien, Standardbibliotheken und Engineering-Praktiken ausgehen. Erstens ist die Programmierphilosophie der Go-Sprache prägnant, klar und lesbar. Es befürwortet einen Ansatz in natürlicher Sprache
Huawei bringt 5 Software-Engineering-Lehrbücher auf den Markt: basierend auf Kunpeng, Open-Source-Hongmeng OpenHarmony, openEuler usw.
Aug 19, 2024 am 04:52 AM
Laut Nachrichten dieser Website vom 18. August erklärte Huaweis offizielles Weibo-Konto für die Ausbildung von IKT-Talenten, dass dies der Fall sei, um das Problem des Fehlens eines Lehrmaterialsystems zu lösen, das auf unabhängig innovativen Softwaresystemen in den Kernlehrbüchern der Software-Engineering-Hauptfächer meines Landes basiert , die Demonstration Software Academy Alliance, Higher Education Press und Huawei Technology Co., Ltd. sowie Universitätslehrer haben zusammengearbeitet, um eine Reihe von 10 Software-Engineering-Lehrbüchern zu erstellen. Diese erste Reihe von fünf Pilotanwendungslehrbüchern wurde veröffentlicht. Die spezifische Einführung ist wie folgt beigefügt: „Experimentelles Tutorial zur Computerorganisation und -struktur – basierend auf dem Kunpeng-Prozessor“. Dieses Buch ist für verwandte Kurse wie „Computerzusammensetzung und -struktur“ und „Computer“ gedacht „Kompositionsprinzipien“ Das experimentelle Anleitungsbuch basiert auf der Kunpeng-Prozessortechnologie von Huawei. Es nutzt die Huawei Cloud als experimentelle Umgebung und schreibt Programme in C-Sprache und Assemblersprache, um den Betrieb des Kunpeng-Prozessors voranzutreiben.
Microsoft stellt mehr Menschen auf KI in Windows um
Sep 17, 2023 pm 08:25 PM
Microsoft wird weiterhin KI in Windows entwickeln. Vor nicht allzu langer Zeit hat der in Redmond ansässige Technologieriese eine Stelle in seinem Windows Incubation-Team eröffnet, um mehr KI-gesteuerte Erlebnisse auf einer Reihe von Geräten zu entwickeln – zuvor arbeitete er an Windows 365. Laut der Jobcenter-Seite von Microsoft sucht das Team nach neuen Software-Ingenieuren auf der Senior- und Lead-Ebene sowie nach einem Software-Engineering-Manager, um „neue Web-, Cloud-Streaming- und KI-gesteuerte Erfahrungen auf einer Reihe von Geräten zu entwickeln und zu entwickeln“. ." . Mindestens 2 Jahre Erfahrung erforderlich. Als Software Engineer sind Sie für die Windows-Plattform, die Betriebssystem-/Chip-Integration und das Cloud-/Client-Design verantwortlich
