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标题:课程设计简易提款机 出现循环问题 求高手指导一下
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yedakaka
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课程设计简易提款机 出现循环问题 求高手指导一下
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <windows.h>
#include<time.h>

typedef struct atmsystem    //定义用户资料
{
    char zhanghao[9];        //用户账号
    char password[11];        //用户密码
    double allmoney;        //总金额
}ATMSYTEM;

typedef struct deal            //定义交易信息
{
    char zhanghao2[9];        //交易对象
    char data[50];            //交易日期
    char style[10];            //交易类型
    double money;            //交易金额
    double lastmoney;        //余额
}DEAL;

void atms_ifo();        //录入用户信息
int shuru();            //输入账号,密码
void cunkuan();            //存款函数
void chaxun();            //查询函数
void qukuan();            //取款函数
void zhuanzhang();        //转账函数
void qingkuang();        //交易情况

int flag;        //控制循环,判断
char zhang[10];    //当前用户
static double count;    //当前用户余额

int main(void)        //主函数
{
    int sel,n;
    atms_ifo();        //初始用户信息
    system("cls");    //清屏
    n = shuru();    //是否登录成功
    system("cls");   
    while( n )        //循环主菜单
    {
        printf("\n \t\t\t__________________________________\n");
        printf(" \t\t\t|     欢迎进入ATM银行自助系统    |\n");
        printf(" \t\t\t| -------------------------------|\n");
        printf(" \t\t\t| 1 存款                         |\n");
        printf(" \t\t\t| 2 查询余额                     |\n");
        printf(" \t\t\t| 3 取款                         |\n");
        printf(" \t\t\t| 4 转账                         |\n");
        printf(" \t\t\t| 5 查询交易情况                 |\n");
        printf(" \t\t\t| 0 退出                         |\n");
        printf(" \t\t\t----------------------------------\n");
        while( 1 )
        {
            printf("请输入选项:");
            scanf("%d",&sel);
            if( sel >= 0 && sel < 6 )
            {
                break;
            }
        }
        if( sel == 0 )
        {
            break;
        }
        switch(sel)
        {
        case 1:                //执行存款函数
            system("cls");
            cunkuan();
            system("cls");
            break;
        case 2:                //执行查询函数
            system("cls");
            chaxun();
            system("cls");
            break;
        case 3:                //执行取款函数
            system("cls");
            qukuan();
            system("cls");
            break;
        case 4:                //执行转账函数
            system("cls");
            zhuanzhang();
            system("cls");
            break;
        case 5:                //执行交易情况函数
            system("cls");
            qingkuang();
            system("cls");
            break;
        default :
            printf("\n操作错误,请重新输入\n");
            break;
        }
    }
    return 0;
}

/*初始此提款机的用户信息,为取款机写入最原始的用户信息,以便以后默认所以用户信息*/
void atms_ifo()
{
    FILE *fp;
    ATMSYTEM at;
    char ch;
    flag = 0;
    if(( fp = fopen( "atmsy.txt", "r" ) ) == NULL )        //创建文件
    {
        //flag = 1;
        fp = fopen( "atmsy.txt", "w" );
    }
    printf("\t\t\t请为该取款机初始用户信息\n");
    printf("\t==================================================================\n");
    ch = fgetc(fp);
    if( ch == EOF )
        flag = 1;
    while(flag)        //如果文件为空,那么便写入初始用户信息
    {
        printf("\n请输入用户账号(0_退出): ");
        scanf("%s",at.zhanghao);
        if(at.zhanghao[0] == '0')
            return;
        printf("请输入用户密码:");
        scanf("%s",at.password);
        printf("请输入用户金额:");
        scanf("%ld",&at.allmoney);
        fwrite(&at,sizeof(ATMSYTEM),1,fp);
    }
    if(flag == 0)        //文件不为空,则不执行此函数
        return;
       fclose(fp);
}
int shuru()        //登录atm,如果3次密码错误,那么返回0,否则返回1
{
    char mi[10];
    int i;
    FILE *fp;
    ATMSYTEM at;
    fp = fopen( "atmsy.txt", "r" );
    flag  = 0;
     printf("\t\t\t\t欢迎进入登录系统\n");
    printf("\t==================================================================\n");
    while(1)        //循环录入用户信息
    {
        printf("\n请输入账号(0_退出):");
        scanf("%s",zhang);
        if(zhang[0] == '0')
        {
            return 0;        //退出系统,不进入主菜单
        }
        while(fread(&at,sizeof(ATMSYTEM),1,fp) != 0)        //查找用户账号是否存在
        {
            if(strcmp(zhang,at.zhanghao) == 0)        //该用户存在
            {
                count = at.allmoney;
                flag = 1;
                break;
            }
        }
        rewind(fp);        //文件指针回到开头
        if(flag)        //若是该用户存在,那么输入密码
        {
            for( i = 0; i < 3; i++)        //3次机会输入密码
            {
                printf("\n请输入密码:");
                scanf("%s",mi);
                while(fread(&at,sizeof(ATMSYTEM),1,fp) != 0)        //核对密码
                {
                    if(strcmp(mi,at.password) == 0)        //该密码存在
                    {
                        return 1;
                    }
                }
                rewind(fp);        //不停返回文件开头,核对密码
            }
            printf("当日密码输错3次!你的银行卡已被吞!请携带本人身份证与银行联系!\n");
            getch();
            return 0;
        }
        if(flag == 0)
        {
            printf("输入账号错误,请重新输入\n");
            getch();
        }
    }
}
void cunkuan()
{
    FILE *fp;
    DEAL d;
    char ch;
     time_t now;              //实例化time_t结构
     struct tm  *timenow;    //实例化tm结构指针
     time(&now);                          //time函数读取现在的时间(国际标准时间非北京时间),然后传值给now
    timenow = localtime(&now);             //localtime函数把从time取得的时间now换算成你电脑中的时间(就是你设置的地区)
    if( (fp = fopen("deal.txt","r")) == NULL )
    {
        fp = fopen("deal.txt","w");
    }
    printf("\t\t\t    欢迎进入存款系统\n");
    printf("\t==================================================================\n");
    while( !feof(fp) )            //这里,将读写头移动到文件结尾,以免覆盖上次的输入
    {
        fread(&d,sizeof(DEAL),1,fp);
    }
    flag = 1;
    while(flag)
    {
        printf("\n请输入存入金额:");
        scanf("%lf",&d.money);
        strcpy(d.zhanghao2,zhang);
        strcpy(d.style,"cunkuan");                //写入交易类型
        strcpy(d.data,asctime(timenow));        //获取系统当前日期
        count += d.money;
        d.lastmoney = count;
        printf("存款成功……\n");
        fwrite(&d,sizeof(DEAL),1,fp);
        rewind(stdin);
        printf("是否退出(y/n)");
        ch = getchar();
        if(ch == 'y' || ch == 'Y')
            flag = 0;
        if(ch == 'n' || ch == 'N')
            flag = 1;
    }
    fclose(fp);
}   
void qukuan()
{
    FILE *fp;
    DEAL d;
    char ch;
    time_t now;              
     struct tm  *timenow;   
     time(&now);                     
    timenow = localtime(&now);            
    if( (fp = fopen("deal.txt","r")) == NULL )
    {
        fp = fopen("deal.txt","w");
    }
    while( !feof(fp) )            
    {
        fread(&d,sizeof(DEAL),1,fp);
    }
    printf("\t\t\t欢迎进入取款系统\n");
    printf("\t==================================================================\n");
    flag = 1;
    while(flag)
    {
        printf("\n请输入取出金额:");
        scanf("%lf",&d.money);
        strcpy(d.zhanghao2,zhang);
        strcpy(d.style,"qukuan");
        strcpy(d.data,asctime(timenow));
        count = count - d.money;
        d.lastmoney = count;
        fwrite(&d,sizeof(DEAL),1,fp);
        printf("取款成功……\n");
        rewind(stdin);
        printf("是否退出(y/n)");
        ch = getchar();
        if(ch == 'y' || ch == 'Y')
            flag = 0;
        if(ch == 'n' || ch == 'N')
            flag = 1;
    }
        fclose(fp);
}
void chaxun()
{
    printf("\t\t\t欢迎进入查询系统\n");
    printf("\t==================================================================\n");
    printf("\n目前账户余额为:%ld\n",count);
    getch();
}
void zhuanzhang()
{
    FILE *fp,*fp1;
    ATMSYTEM at;
    DEAL d;
    char zhang2[10];
     time_t now;              //实例化time_t结构
     struct tm  *timenow;    //实例化tm结构指针
     time(&now);                          //time函数读取现在的时间(国际标准时间非北京时间),然后传值给now
    timenow = localtime(&now);             //localtime函数把从time取得的时间now换算成你电脑中的时间(就是你设置的地区)
    fp = fopen( "atmsy.txt", "r" );
    fp1 = fopen("deal.txt","r");
    printf("\t\t\t欢迎进入转账系统\n");
    printf("\t==================================================================\n");
    while( !feof(fp1) )
    {
        fread(&d,sizeof(DEAL),1,fp1);
    }
    while(1)
    {
        printf("\n请输入你要转账的用户:");
        scanf("%s",zhang2);
        while( fread(&at,sizeof(ATMSYTEM),1,fp) != 0 )        //寻找用户指定转账用户
        {
            if(strcmp(zhang2,at.zhanghao) == 0)
                flag = 1;
        }
        if(flag)
        {
            printf("\n请输入你要转账的金额:");
            scanf("ld",d.money);
            strcpy(d.zhanghao2,zhang2);
            strcpy(d.style,"zhuanzhang");
            strcpy(d.data,asctime(timenow));
            count = count - d.money;
            d.lastmoney = count;
            printf("\n转账成功……");
            fwrite(&d,sizeof(DEAL),1,fp1);
            rewind(stdin);
            return;
        }
        else
        {
            printf("\n没有这个用户,请重新输入\n" );
        }
    }
    fclose(fp);
    fclose(fp1);
}
void qingkuang()
{
    FILE *fp;
    DEAL d;
    printf("\t\t\t欢迎进入交易情况查询系统\n");
    printf("\t==================================================================\n");
    fp = fopen("deal.txt","r");
    printf("你查询的账号为:%s",zhang);
    while(fread(&d,sizeof(DEAL),1,fp) != 0)
    {
        printf("\n交易对象:%s\n交易日期:%s\n交易类型:%s\n交易金额:%ld\n余额:%ld",d.zhanghao2,d.data,d.style,d.money,d.lastmoney);
    }
    rewind(stdin);
    fclose(fp);
}
搜索更多相关主题的帖子: 提款机 用户 账号 
2011-01-15 08:40
yedakaka
Rank: 1
等 级:新手上路
帖 子:2
专家分:0
注 册:2011-1-15
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就是进了预存数字 下面的清零了 进步去
2011-01-15 15:28
快速回复:课程设计简易提款机 出现循环问题 求高手指导一下
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