qfedu-c-level/day12/d8_test1.c

#include <stdio.h>

int main()
{
    char m[30] = "lucy, 666";
    char *const p = m; // 必须初始化, 不等于 const char *p = m;
    p[0] = 'd';
    *(p + 1) = 'o';
    printf("%s\n", p);
    // p = "jack"; // 编译时报错: 因为 p 是只读变量

    return 0;
}