打印指针值 [英] Printing a pointers value

问题描述

#include <stdio.h>

int main(void)
{
   int x = 99;
   int *pt1;

   pt1 = &x;

   printf("Value at p1: %d\n", *pt1);
   printf("Address of p1 (with %%p): %p\n", pt1);
   printf("Address of p1 (with %%d): %d\n", pt1);

   return 0;
}

使用%d而不是%p的打印机指针值有哪些不利之处/危险?

What are the downsides/dangers to printer pointer values with %d instead of %p?

推荐答案

％d显示一个整数-指针的大小不必等于整数的大小.

%d displays an integer - there is no need for the size of a pointer to equal the size of an integer.

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