C语言ATM程序设计

1、C语言程序实践之欧侯瑞魂创作实验陈述姓名学号班级指导教师开设学期开设时间实验题目自动取款机程序设计实验日期评定成绩评定人签字评定日期、实验目的文件的应用：打开、关闭、输入、输出等、实验内容与实验步调实验内容、原理分析1. 给出数据结构或函数定义结构体：structclients(longintcard_number,card_password;charname20;floatmoney;yonghu3;card_number银行卡号card_password密码name:用户名money:卡内金额自定义函数：voidfuction(float,int);用丁登陆后的操纵用流程图暗示出来程序设计

2、的思想人可充话费输结束*3.给出具体实验步调#include<stdio.h>#include<stdlib.h>/*用户人数*/#defineN3structclients(longintcard_number,card_password;charname20;floatmoney;yonghuN;FILE*fp;inti;voidfuction(float,int);voidmain()(intj,number,password,times1=3,times2=3;printf(-欢迎使用中国建设银行自动取款机！n");fp=fopen("cli

3、ents.txt”,"a+");if(getw(fp)=EOF)(printf(-用户文件未设置！n");for(i=0;i<N;i+)/*文件不存在时，输入用户信息*/(printf(-请输入第d位用户的信息：n",i+1);printf(-银行卡号密码用户名卡内金额n");scanf("%d%d%s%f",&yonghui.card_number,&yonghui.card_password,,&yonghui.money);if(i=1)(while(yonghui

4、.card_number=yonghui-1.card_number)|(yonghui.card_password=yonghui-1.card_password)(printf("输入信息有重复！请重新输入n");printf(-请输入第d位用户的信息：n",i+1);printf(-银行卡号密码用户名卡内金额n");scanf("%d%d%s%f",&yonghui.card_number,&yonghui.card_password,,&yonghui.money);if(i=2

5、)(while(yonghui.card_number=yonghui-1.card_number)|(yonghui.card_password=yonghui-.card_password)|(yonghui.card_number=yonghui-2.card_number)|(yonghui.card_password=yonghui-.card_password)(printf("输入信息有重复！请重新输入n");printf(-请输入第d位用户的信息：n",i+1);printf(-银行卡号密码用户名卡内金额n");scanf("%

6、d%d%s%f",&yonghui.card_number,&yonghui.card_password,,&yonghui.money);fprintf(fp,"%d%d%s%f",yonghui.card_number,yonghui.card_password,,yonghui.money);putc('n',fp);fclose(fp);printf("nn请登录系统n");/*登录系统，输入卡号和密码*/printf("请输入您的银行卡号

7、:n");scanf("%d",&number);printf("请输入您的密码:n");scanf("%d",&password);fp=fopen("clients.txt","r+");for(i=0;i<N;i+)(fscanf(fp,"%d%d%s%f",&yonghui.card_number,&yonghui.card_password,,&yonghui.money);fclose

8、(fp);for(i=0;i<N;i+)/*判断卡号及密码是否匹配*/(if(number!=yonghu0.card_number)&&(number!=yonghu1.card_number)&&(number!=yonghu2.card_number)if(times1-1)!=0)(printf("该用户不存在！您还有d次测验考试机会n”,times1-1);printf("请输入您的银行卡号：n");scanf("%d”,&number);printf("请输入您的密码:n");

9、scanf("%d”,&password);i=-1;else(printf("测验考试失败！请按任意键退出:n");exit(0);times1-;else(if(number=yonghui.card_number)(if(password=yonghui.card_password)(printf("%s登陆成功！请继续您的操纵n”,);j=i;i=5;/*登陆成功，退出循环*/elseif(times2-1)!=0)(printf("密码输入错误！您还有d次测验考试机会n”,times2-1);print

10、f("请输入您的密码：n");scanf("%d”,&password);i=-1;else(printf("测验考试失败！请按任意键退出:n");exit(0);times2-;fuction(yonghuj.money,j);voidfuction(floatm,intk)(floatsaved_money,fetched_money,payment;intphone_num,x,old_password,new_password;while(1)(printf("1.存款.n2.取款.n3.充话费.n4.修改密码.n5.

11、显示菜单.n0.退出系统.n");scanf("%d”,&x);switch(x)case0:printf("退出系统!");exit(0);case1:printf("卡内金额：%fn",m);printf("请输入存款金额:n");scanf("%f",&saved_money);while(saved_money<0)printf(-输入有误！请重新输入！n");printf("请输入存款金额:n");scanf("%f&quo

12、t;,&saved_money);m+=saved_money;printf("操纵成功！卡内余额为：%fn",m);yonghuk.money=m;fp=fopen("clients.txt”,"w+");for(i=0;i<N;i+)fprintf(fp,"%d%d%s%f",yonghui.card_number,yonghui.card_password,,yonghui.money);putc('n',fp);fclose(fp);break;case2:pri

13、ntf("卡内金额：%fn",m);printf("请输入取款金额:n");scanf("%f",&fetched_money);m-=fetched_money;while(fetched_money<0)|(m<0)(printf("输入有误！请重新输入！n");m+=fetched_money;printf("请输入取款金额:n");scanf("%f",&fetched_money);m-=fetched_money;printf(&quo

14、t;操纵成功！卡内余额为：%fn",m);yonghuk.money=m;fp=fopen("clients.txt”,"w+");for(i=0;i<N;i+)(fprintf(fp,"%d%d%s%f",yonghui.card_number,yonghui.card_password,,yonghui.money);putc('n',fp);fclose(fp);break;case3:printf("卡内金额：%fn",m);printf("请输入电话

15、号码:n");scanf("%d”,&phone_num);printf("请输入所交话费金额:n");scanf("%f",&payment);m-=payment;while(payment<0)|(m<0)printf(-输入有误！请重新输入!n");m+=payment;printf("请输入所交话费金额：n");scanf("%f",&payment);m-=payment;printf("操纵成功！卡内余额为：%fn"

16、,m);yonghuk.money=m;fp=fopen("clients.txt”,"w+");for(i=0;i<N;i+)fprintf(fp,"%d%d%s%f",yonghui.card_number,yonghui.card_password,,yonghui.money);putc('n',fp);fclose(fp);break;case4:while(1)printf("请输入原密码:n");scanf("%d”,&old_password);

17、if(old_password=yonghuk.card_password)printf(-请输入新密码:n");scanf("%d”,&new_password);printf("密码修改成功!n");yonghuk.card_password=new_password;fp=fopen("clients.txt","w+");for(i=0;i<N;i+)(fprintf(fp,"%d%d%s%f",yonghui.card_number,yonghui.card_passwo

18、rd,,yonghui.money);putc('n',fp);fclose(fp);break;elseprintf("密码输入错误！n”);break;case5:break;default:printf(-输入有误！请重新输入！n");break;三、实验过程与结果分析1. 现象：输入用户信息后，在登录系统时，输入第一个用户的信息，提示该用户不存在解决方法：fp=fopen("clients.txt”,"r+");for(i=0;i<N;i+)(fscanf(fp,"%d%d%s%f

19、",&yonghui.card_number,&yonghui.card_password,,&yonghui.money);fclose(fp);2. 现象：登录系统时，输入卡号或密码超出3次错误后，仍能输入解决方法：增加变量times1=3(卡号输入错误的次数)，times2=3(密码输入错误的次数)，当times-1>0时,提示剩余测验考试机会，当times-1=0时，退出程序3. 现象：存取款或充话费时，输入负数仍能运行解决方法：增加循环：while(saved_money<0)(printf("输入有误！请重新输入！n");printf("请输入存款金额：n");scanf("%f",&saved_money);while(fetched_money<0)|(m<0)