1. #include <stdio.h>
    3. int main() {
    4.     int len = 4;
    5.     int data[] = { 0, 1, 2, 3 };
    6.     int *p_int = data;
    8.     printf("sizeof(p_int) = %d\n", sizeof(p_int));
    10.     printf("addr(len) = %u\naddr(data) = %u\naddr(p_int) = %u\np_int = %u\n", 
    11.         &len, data, &p_int, p_int);
    13.     for (int i = 0; i < len; i++) {
    14.         data[i] = data[i] + 1;
    15.         *p_int = *p_int + 1;
    16.         p_int = p_int + 1;
    18.         printf("data[%d] = %d\n", i, data[i]);
    19.     }
    21.     return 0;
    22. }

    代码2-3：指针修改数组变量
    指针修改数组变量 - 图1
    代码2-3：指针修改数组变量 运行结果
    41a81da5aa54811eae5f566d3469f9d.png