c语言switch case用法详解

# include <stdio.h>

int main(void)

{

    int val;  //variable的缩写, “变量”的意思

    printf("请输入您想去的楼层:");

    scanf("%d", &val);

    switch (val)

    {

        case 1:

            printf("1层开!\n");

            break;

        case 2:

            printf("2层开!\n");

            break;

        case 3:

            printf("3层开!\n");

            break;

        default:

            printf("该层不存在, 请重新输入\n");

    }

    return 0;

}