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
kejuruteraan perisian
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>Salin selepas log masuk
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Langkah utama untuk menjadi jurutera Java yang hebat
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Bagaimana untuk menjadi seorang jurutera Java yang baik? Sebagai bahasa pengaturcaraan yang digunakan secara meluas dalam bidang pembangunan perisian, Java telah menjadi matlamat yang dikejar oleh banyak pembangun. Jadi, sebagai jurutera Java, bagaimana anda boleh menjadi jurutera Java yang cemerlang? Artikel ini akan membincangkan tiga aspek: bahan pembelajaran, amalan pengaturcaraan dan pembelajaran berterusan. Pertama sekali, bahan pembelajaran adalah penting untuk menjadi seorang jurutera Java yang baik. Adalah penting untuk mempelajari bahan pengenalan Java yang paling asas. Anda boleh membaca Java klasik
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Terokai jawatan pekerjaan yang paling menjanjikan dalam industri pengaturcaraan Python Dengan perkembangan pesat teknologi maklumat, industri pengaturcaraan berkembang pesat, memberikan pencari kerja dengan sejumlah besar peluang pekerjaan. Di antara banyak bahasa pengaturcaraan, Python telah menjadi salah satu bahasa yang paling popular kerana kesederhanaan, kemudahan pembelajaran, fungsi yang berkuasa dan aplikasi yang luas. Artikel ini akan meneroka pekerjaan yang paling menjanjikan dalam industri pengaturcaraan Python dan memberikan beberapa contoh kod. Jurutera pembangunan Python Jurutera pembangunan Python ialah jawatan yang paling biasa dan dalam permintaan
Nasihat Pembangunan Python: Menguasai dan Menggunakan Amalan Kejuruteraan Perisian Terbaik
Nov 23, 2023 am 09:08 AM
Sebagai bahasa pengaturcaraan peringkat tinggi, Python digunakan secara meluas dalam bidang seperti pembangunan aplikasi web, sains data dan kecerdasan buatan. Walaupun Python mudah dan mudah dipelajari, kerumitan kejuruteraan perisian akan menjadi lebih ketara apabila projek itu berkembang. Oleh itu, adalah penting untuk menguasai dan menggunakan amalan kejuruteraan perisian terbaik semasa pembangunan Python. Dalam artikel ini, kami akan membincangkan beberapa nasihat pembangunan Python untuk membantu pembangun memanfaatkan kuasa Python dengan lebih berkesan sambil mengelakkan kesilapan dan amalan buruk.
Sembilan kesilapan biasa yang dilakukan saintis data apabila menggunakan Python
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Amalan terbaik dipelajari daripada kesilapan, jadi di sini kami telah meringkaskan beberapa kesilapan paling biasa yang kami hadapi dan menyediakan kaedah, idea dan sumber tentang cara terbaik untuk menyelesaikannya. 1. Tidak menggunakan persekitaran maya bukanlah isu pengekodan itu sendiri, tetapi saya masih berpendapat ia adalah amalan yang sangat baik untuk mengasingkan persekitaran untuk setiap jenis projek. Mengapa menggunakan persekitaran khusus untuk setiap projek? Sebab pertama ialah masalah pengurusan pakej Python sendiri Kami mahu meminimumkan konflik antara pakej dan versi. Sebab lain ialah kod dan kebergantungan kami boleh digunakan dengan mudah ke mana-mana lokasi menggunakan persekitaran maya bermula dari Anaconda atau Pipenv. Jika anda ingin pergi lebih dalam maka Docker ialah pilihan pertama. 2. Penggunaan J yang berlebihan
对一个软件工程来说，占总工作量的百分比最大的工作是什么
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对一个软件工程来说，占总工作量的百分比最大的工作是：测试和调试工作。测试的目的是发现程序中的缺陷，调试的目的是定位并且解决程序中的问题。测试贯穿整个软件的生命周期，调试一般在开发阶段。
Pemahaman mendalam tentang falsafah pengaturcaraan dan kejuruteraan perisian bahasa Go
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Memahami secara mendalam falsafah pengaturcaraan dan kejuruteraan perisian bahasa Go Sebagai bahasa pengaturcaraan yang baru muncul, bahasa Go semakin mendapat perhatian dan kasih sayang daripada pembangun kerana kesederhanaan, kecekapan dan kebolehpercayaannya. Ia bukan sahaja digunakan secara meluas dalam projek dalaman Google, tetapi juga telah mencapai hasil yang cemerlang dalam pembangunan dalam pelbagai bidang. Untuk mempunyai pemahaman yang mendalam tentang falsafah pengaturcaraan dan kejuruteraan perisian bahasa Go, kita mesti bermula daripada prinsip reka bentuk, perpustakaan standard dan amalan kejuruteraan. Pertama sekali, falsafah pengaturcaraan bahasa Go adalah ringkas, jelas dan boleh dibaca. Ia menyokong pendekatan bahasa semula jadi
Huawei melancarkan 5 buku teks kejuruteraan perisian: berdasarkan Kunpeng, sumber terbuka Hongmeng OpenHarmony, openEuler, dsb.
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Menurut berita dari laman web ini pada 18 Ogos, akaun Weibo rasmi Huawei untuk latihan bakat ICT menyatakan bahawa untuk menyelesaikan masalah kekurangan sistem bahan pengajaran berdasarkan sistem perisian inovatif bebas dalam buku teks teras jurusan kejuruteraan perisian negara saya. , Demonstration Software Academy Alliance, Higher Education Press, dan Huawei Technology Co., Ltd. dan guru universiti bekerjasama untuk mencipta satu siri 10 buku teks kejuruteraan perisian. Kumpulan pertama lima buku teks aplikasi rintis ini telah dilancarkan Pengenalan khusus dilampirkan seperti berikut: "Tutorial Eksperimen Organisasi dan Struktur Komputer - Berdasarkan Pemproses Kunpeng" Buku ini adalah untuk kursus berkaitan seperti "Komposisi dan Struktur Komputer" dan "Komputer". Prinsip Komposisi" Buku panduan percubaan direka bentuk berdasarkan teknologi pemproses Kunpeng Huawei. Ia menggunakan Huawei Cloud sebagai persekitaran percubaan dan menulis program dalam bahasa C dan bahasa himpunan untuk memacu operasi pemproses Kunpeng.
Microsoft memindahkan lebih ramai orang ke AI dalam Windows
Sep 17, 2023 pm 08:25 PM
Microsoft akan terus membina AI dalam Windows. Tidak lama dahulu, gergasi teknologi yang berpangkalan di Redmond membuka kedudukan pada pasukan Windows Incubationnya untuk membina lebih banyak pengalaman dipacu AI merentas pelbagai peranti – sebelum ini berfungsi pada Windows 365. Menurut halaman pusat kerja Microsoft, pasukan itu sedang mencari jurutera perisian baharu di peringkat kanan dan peneraju, serta pengurus kejuruteraan perisian untuk "membayangkan dan membina web baharu, penstriman awan dan pengalaman dipacu AI merentas pelbagai peranti. ." . Minimum 2 tahun pengalaman diperlukan. Untuk jawatan Jurutera Perisian, anda akan bertanggungjawab untuk platform Windows, penyepaduan sistem pengendalian/cip, reka bentuk awan/pelanggan
