switch()函数的学习与运用

#include <stdio.h>

int main() {
    int a;
    printf("您好，这是自助贩卖机\n1.矿泉水\n2.巧克力\n3.爆米花\n4.果汁\n5.数量\n6.退出系统\n请输入1~6的数字：");
    scanf("%d", &a);
    switch (a) {
        case 1:
            printf("矿泉水");
            break;
        case 2:
            printf("巧克力");
            break;
        case 3:
            printf("爆米花");
            break;
        case 4:
            printf("果汁");
            break;
        case 5:
            printf("数量");
            break;
        case 6:
            printf("退出系统");
            break;
    }
}