switch语句解决ATN取款机问题

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#include<stdio.h>int main(int argc, const char *argv[]){    int select,del_select;    int total_money = 1000;    int add_money;    int del_money;    while(1)    {        printf("***************************\n");        printf("1.查询 2.存款 3.取款 0.退卡\n");        printf("***************************\n");        scanf("%d",&select);        switch(select)        {        case 1:            printf("total_money:%d\n",total_money);             break;        case 2:            printf("请输入存款金额:");            scanf("%d",&add_money);            if(add_money % 50 != 0)            {                printf("ATM只接收50或100面额\n");                continue;            }            total_money += add_money;            printf("存款成功\n");            break;        case 3:#if 0            printf("请输入取款金额:");            scanf("%d",&del_money);            total_money -= del_money;            printf("取款成功\n");#endif            printf("***************************\n");            printf("选择1.100 2.200 3.500 4.1000 5.自定义\n");            printf("***************************\n");            scanf("%d",&del_select);            switch(del_select)            {            case 1:                if(total_money < 100)                {                    printf("金额不足\n");                    continue;                }                total_money -= 100;                break;            case 2:                if(total_money < 200)                {                    printf("金额不足\n");                    continue;                }                total_money -= 200;                break;            case 3:                if(total_money < 500)                {                    printf("金额不足\n");                    continue;                }                total_money -= 500;                break;            case 4:                if(total_money < 1000)                {                    printf("金额不足\n");                    continue;                }                total_money -= 1000;                break;            case 5:                printf("请输入需要的取款金额:");                scanf("%d",&del_money);                if(del_money > total_money)                {                    printf("金额不足\n");                    continue;                }                if(del_money % 50 != 0)                {                    printf("只支持50或100面额\n");                    continue;                }                total_money -= del_money;                break;            }            printf("取款成功\n");            break;        case 0:            printf("请选择是否退卡:yes是退出 no不退出\n");            char choice[5];            scanf("%s",choice);            if(strcmp(choice,"yes") == 0)            {                printf("退卡成功\n");                return 0;            }            if(strcmp(choice,"no") == 0)            {                printf("继续操作\n");                continue;            }        }    }    return 0;}
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