关于指针的这句英文应该怎么解释?


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?

c 指针 C++

叫我工厂长 10 years, 2 months ago

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.
秋葉留未穗 answered 10 years, 2 months ago

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