面试1

职位: linux c 开发

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* 被注释掉的代码是不成立的,编译不通过 */
#include 

int main(void)
{
    int a = 2;
    int b = 3;
    int c = 4;

    int *const n1 = &a;
    const int *n2 = &a;
    int const *n3 = &a;

    //n1 = &b;
    *n1 = 5;

    n2 = &b;
    //*n2 = 1;

    n3 = &b;
    //*n3 = 5;

    return 0;
}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 #include 
2 
3 int main(void)
4 {
5     int a[][3] = {1,2,3,4,5,6};
6     int (*ptr)[3] = a;
7 
8     printf("%d %d\n", (*ptr)[1], (*ptr)[2]);
9     ++ptr;
10    printf("%d %d\n", (*ptr)[1], (*ptr)[2]);
11 
12    return 0;
13 }
/* 输出
2 3
5 6
*/