小编Pol*_*s.A的帖子

我正在阅读一本旧书“ The C Programming Language”来学习C，并且目前正在尝试使用指针。

#include <stdio.h>
int
main (void)
{
    // init string
    char s[8] = "ZZZZZZZ";
    // it goes: Z Z Z Z Z Z Z \0

    long *p;         // make pointer refering to the same adress as s
    p = s;           // but declared long for modifying 4 bytes at once
    *p = 0x41414141; // and assign hexadecimal constant equal to 65 65 65 65

    // expect output to be: AAAAZZZ
    printf ("%s\n", s);
    // but get …