进阶第21课时，实践，简易银行系统开发第四版
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/**Copyright(c) 2015/6/3 CSDN博客*All rights reserved.*文件名称：main.c*作 者：金叶*完成日期：2015/6/3*版本号：V1.0*问题描述：小型银行应用程序*程序输出：*/#include <stdio.h>#include "bank.h"int main(){ if (ipass()==1) { downdate(); work(); update(); } return 0;}#ifndef BANK_H_INCLUDED#define BANK_H_INCLUDED#define upNum 2000int ipass(); //银行员工密码确认void downdate(); //加载数据int iChoose(); //银行员工选择功能int search(int id); //用于查找账户对应的下标int inputpass(); //用于输入密码void work(); //主菜单void open_account(); //1开户void cancellation(); //2注销void deposit(); //3存款void withdraw_money(); //4取款void query(); //5查询void transfer_accounts(); //6转账void loss(); //7挂失void unloss(); //8解挂void change(); //9该密void update(); //保存数据，退出struct bank{ int num; char name[20]; int password; double balance; int state;};struct bank user[upNum];int N; //银行用户实际人数#endif // BANK_H_INCLUDED#include <stdio.h>#include <string.h>#include <stdlib.h>#include <ctype.h>#include <conio.h>#include "bank.h"int ipass(){ int i,j=3,k; int right=0; char ch; char worker[20][20]; char ipass[20][20]; char worker1[20]; char ipass1[20]; FILE *fp; printf("+-------------------+\n"); printf("+ 欢迎光临CSDN银行 +\n"); printf("+-------------------+\n"); if ((fp=fopen("worker.txt","r"))==NULL) { printf("worker file cannot open!"); exit(0); } for (i=0; i<20; i++) { fscanf(fp,"%s %s",worker[i],ipass[i]); //读入工作人员用户名 } fclose(fp); do { printf("请输入业务员的用户名："); scanf("%s",worker1); printf("请输入密码："); i=0; while((ch=getch())!='\r') { ipass1[i++]=ch-1; //文件保存密码使用加密 putchar('*'); } ipass1[i]='\0'; fflush(stdin); printf("\n"); for (k=0; k<20; k++) { if (strcmp(worker1,worker[k])==0&&strcmp(ipass1,ipass[k])==0) right=1; } if (right==1) { break; } else { j--; if (j>0) { printf("超过3次将退出，你还可以尝试%d次！\n", j); } else { printf("对不起，你不能进入系统\n"); exit(0); } } } while (j); return right;}#include <stdio.h>#include <string.h>#include <stdlib.h>#include <ctype.h>#include <conio.h>#include "bank.h"void downdate(){ int i=0; FILE *fp; if ((fp=fopen("bank.txt","r"))==NULL) { printf("bank file cannot open!"); exit(0); } while(fscanf(fp,"%d %s %d %lf %d",&user[i].num,user[i].name, &user[i].password, &user[i].balance,&user[i].state ) != EOF) { i++; } N=i; fclose(fp); return;}void work(){ int ichose; do { ichose=iChoose(); switch (ichose) { case 1: open_account(); //开户 break; case 2: cancellation(); //2注销 break; case 3: deposit(); //3存款 break; case 4: withdraw_money(); //4取款 break; case 5: query(); //5查询 break; case 6: transfer_accounts(); //6转账 break; case 7: loss(); //7挂失 break; case 8: unloss(); //8解挂 break; case 9: change(); //9该密 break; case 0: printf("欢迎再来\n"); update(); //保存退出 } } while (ichose);}int iChoose(){ int ichose; while (1) { printf("\n"); printf("+----------------------------+\n"); printf("+ 1 开户 2 销户 3 存款 +\n"); printf("+ 4 取款 5 查询 6 转账 +\n"); printf("+ 7 挂失 8 解挂 9 改密 +\n"); printf("+ 0 退出 +\n"); printf("+----------------------------+\n"); printf("请输入操作指令:"); scanf("%d",&ichose); if (ichose>=0 && ichose<=9) { break; } else printf("输入错误，请重新选择\n\n"); } return ichose;}void open_account(){ int ipass1,ipass2; if (N==upNum) { printf("银行用户达到上限，不能开户\n"); } printf("正在进行开户\n"); printf("请输入用户账号："); scanf("%d",&user[N].num); printf("请输入用户姓名："); scanf("%s",user[N].name); printf("请输入密码："); ipass1=inputpass(); printf("请再次确认密码："); ipass2=inputpass(); if (ipass1==ipass2) { user[N].password=ipass1; user[N].state=0; printf("存款金额："); scanf("%lf",&user[N].balance); printf("开户成功！\n"); N++; } else { printf("密码错误，开户失败！\n"); }}void cancellation(){ int i; int cancel; int pass; printf("输入待销户账号："); scanf("%d",&cancel); i=search(cancel); printf("姓名:%s\n",user[i].name); printf("密码:"); pass=inputpass(); if (pass==user[i].password) { printf("余额：%.2lf",user[i].balance); printf("确认销户Y/N:"); if(tolower(getchar())=='y') { user[i].balance=0; //取款后余额变0 user[i].state=2; //状态变为注销 printf("取款 %.2f 元，销户成功！\n", user[i].balance); } else { printf("你取消了操作，销户失败！\n"); } } else { printf("密码错误，销户失败！\n"); }}void deposit(){ int i; int id; int pass; double money; printf("请输入账号:"); scanf("%d",&id); i=search(id); if (i<0) { printf("用户名不存在！\n"); } else { printf("姓名：%s",user[i].name); printf("密码："); pass=inputpass(); if (pass==user[i].password&&user[i].state==0) { printf("输入存款金额："); scanf("%lf",&money); printf("余额总计%.2lf,存款成功",money+user[i].balance); } else if (pass==user[i].password&&user[i].state==1) { printf("卡已挂失，存款失败！\n"); } else if (pass==user[i].password&&user[i].state==2) { printf("卡已注销，存款失败！\n"); } else { printf("密码错误，存款失败！\n"); } }}void withdraw_money(){ int i; int id; int pass; double money; printf("请输入账号："); scanf("%d",&id); i=search(id); if(i<0) { printf("用户名不存在！\n"); } else { printf("姓名：%s",user[i].name); printf("密码："); pass=inputpass(); if (pass==user[i].password&&user[i].state==0) { printf("余额 ：%.2lf\n",user[i].balance); printf("取款金额："); scanf("%lf",&money); if (money>user[i].balance) { printf("余额不足，取款失败"); } else { user[i].balance-=money; printf("余额：%.2lf",user[i].balance); } } else if (pass==user[i].password&&user[i].state==1) { printf("卡已挂失，取款失败！\n"); } else if (pass==user[i].password&&user[i].state==2) { printf("卡已注销，取款失败！\n"); } else { printf("密码错误，取款失败！\n"); } }}void query(){ int i; int id; int pass; printf("请输入账号："); scanf("%d",&id); i=search(id); printf("姓名：%s",user[i].name); printf("密码："); pass=inputpass(); if (pass==user[i].password) { printf("余额：%.2lf\n",user[i].balance); if (user[i].state==0) { printf("当前状态：正常\n"); } else if (user[i].state==1) { printf("当前状态：挂失\n"); } else printf("当前状态：注销\n"); printf("查询完毕！\n"); } else { printf("密码错误，查询失败\n"); }}void transfer_accounts(){ int id,id2; int i,i2; double money; int pass; printf("请输入转出账号："); scanf("%d",&id); i=search(id); printf("姓名：%s",user[i].name); printf("密码："); pass=inputpass(); if (pass==user[i].password&&user[i].state==0) { printf("请输入转入账号："); scanf("%d",&id2); i2=search(id2); printf("转账金额："); scanf("%lf",&money); if (money>user[i].balance) { printf("金额不足，转账失败！\n"); } else { printf("转账成功，余额 %.2lf\n",user[i].balance-money); user[i2].balance+=money; } }}void loss(){ int id; int i; int pass; printf("请输入账号："); scanf("%d",&id); i=search(id); printf("姓名：%s",user[i].name); printf("密码："); pass=inputpass(); if (pass==user[i].password) { printf("余额：%.2lf\n",user[i].balance); if (user[i].state==0) { printf("当前状态：正常\n"); user[i].state=1; printf("挂失成功！\n"); } else if (user[i].state==1) { printf("当前状态：挂失\n"); } else printf("当前状态：注销\n"); } else { printf("密码错误，挂失失败\n"); }}void unloss(){ int id; int i; int pass; printf("请输入账号："); scanf("%d",&id); i=search(id); printf("姓名：%s",user[i].name); printf("密码："); pass=inputpass(); if (pass==user[i].password) { printf("余额：%.2lf\n",user[i].balance); if (user[i].state==0) { printf("当前状态：正常\n"); } else if (user[i].state==1) { printf("当前状态：挂失\n"); user[i].state=0; printf("解挂成功！\n"); } else printf("当前状态：注销\n"); } else { printf("密码错误，解挂失败\n"); }}void change(){ int id; int i; int pass,pass1,pass2; printf("请输入账号："); scanf("%d",&id); i=search(id); printf("姓名：%s",user[i].name); printf("密码："); pass=inputpass(); if (pass==user[i].password&&user[i].state!=2) { printf("新密码:"); pass1=inputpass(); printf("再次输入："); pass2=inputpass(); if (pass1==pass2) { user[i].password=pass1; } else { printf("2次输入不正确,改密码失败\n"); } } else { printf("密码不对！\n"); }}void update(){ FILE *p; int i=0; if ((p=fopen("bank.txt", "w"))==NULL) { printf("bank.txt file cannot open!"); exit(0); } for(i=0; i<N; i++) fprintf(p,"%d %s %d %lf %d\n",user[i].num, user[i].name, user[i].password, user[i].balance,user[i].state); fclose(p); exit(0);}#include <stdio.h>#include <string.h>#include <stdlib.h>#include <ctype.h>#include <conio.h>#include "bank.h"int search(int id){ int index; index=-1; int i; for (i=0; i<N; i++) { if (user[i].num==id) { index=i; break; } } return index;}int inputpass(){ char ch; //接收字符形式密码 int iPass=0; //要转换为数字 int i; while(1) { for(i=0; i<6; i++) { ch=getch(); //输入但不显示 putchar('*'); //输出* if(isdigit(ch)) iPass=iPass*10+(ch-'0'); else { iPass=0; break; //退出for循环后，再次接受 } } fflush(stdin); //清除键盘缓存区中已经有的输入 printf("\n"); if(iPass==0) //此条件成立可能由两种情况引起：输入了非数字字符被直接重置为0，或6位全0后正常退出for循环 { printf("密码要求全为数字，且不能全0！\n"); printf("请重新输入密码: "); } else break; } return iPass;}
等老师把进阶的所有实践都完成了 重新再看一遍进阶，目前在复习之前的内容
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