c++ - 关于指针的这句英文应该怎么解释?
伊谢尔伦
伊谢尔伦 2017-04-17 11:35:55
0
1
520

The type of pointer matters not when you have to read the adress,it matters when you dereference or when you perform pointer arithmetic.(The type of pointer play role when you try to dereference or when you try or perform pointer arithmetic.)
能举一个通俗的例子解释下吗?

伊谢尔伦
伊谢尔伦

小伙看你根骨奇佳,潜力无限,来学PHP伐。

reply all(1)
伊谢尔伦

对于一个指针

  • 类型体现在指针运算,比如 int *i;i++;此时i移动了4 bytes,若是char *s;s++;指针移动 1 byte.
  • 类型还体现在解引用,比如上一条*i会读取以i地址开头的4 bytes内容,而s则只读取s为首地址的的1 byte内容.
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!