C语言银行ATM系统

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// ConsoleApplication8.cpp : 定义控制台应用程序的入口点。

//#include "stdafx.h"#include "iostream"#include "stdio.h"#include "time.h"using namespace std;typedef struct Account{int No; //账号int pwd;//密码char name[10];//户主姓名char ID[18];//户主身份证号float remain; //余额}Account;int size=sizeof(Account);typedef struct Stat{int No;//账号int year;int mon;int day;int hour;int min;int sec;float money;//改变额度存入为正数,取出为负数int ToNo;//目标账号用于转账。

取款时设为0即可}Stat;int Times(char i){time_t timer;time(&timer);tm t_tm;localtime_s(&t_tm,&timer);if(i=='y') return t_tm.tm_year+1900;else if(i=='m') return t_tm.tm_mon+1;else if(i=='d') return t_tm.tm_mday;else if(i=='h') return t_tm.tm_hour;else if(i=='i') return t_tm.tm_min;else if(i=='s') return t_tm.tm_sec;};void WriteStat(int FromNo,int ToNo,float money){FILE *St;fopen_s(&St,"账户明细.txt","ab+");if(St==NULL){cout<<"打开失败"<<endl;return;};if(ToNo==0){Stat s1;s1.year=Times('y');s1.mon=Times('m');s1.day=Times('d');s1.hour=Times('h');s1.min=Times('i ');s1.sec=Times('s');s1.No=FromNo;s1.ToNo=ToNo;s1.money=money;fseek(St,0,SEEK_END);fwrite(&s1,sizeof(s1),1,St);}else{Stat s1,s2;s1.year=Times('y');s1.mon=Times('m');s1.day=Times('d');s1.hour=Times('h');s1.min=Times('i ');s1.sec=Times('s');s1.No=FromNo;s1.ToNo=ToNo;s1.money=-money;s2.year=Times('y');s2.mon=Times('m');s2.day=Times('d');s2.hour=Times('h');s2.min=Times('i ');s2.sec=Times('s');s2.No=ToNo;s2.ToNo=FromNo;s2.money=money;//写文件fseek(St,0,SEEK_END);fwrite(&s1,sizeof(s1),1,St);fseek(St,0,SEEK_END);fwrite(&s2,sizeof(s2),1,St);}//关闭文件fclose(St);cout<<"记录存储成功!"<<endl;};void CreateAccount(){//打开账号文件system("cls");FILE *fp;fopen_s(&fp,"账号信息.txt","ab+");if(fp==NULL){cout<<"打开失败"<<endl;return;}Account Ac,PreAc;int pwd,pwdcfm;fseek(fp,-size,SEEK_END);fread(&PreAc,sizeof(PreAc),1,fp);if(PreAc.No<0) PreAc.No=10000;Ac.No=PreAc.No+1;cout<<"您的账号为:"<<Ac.No<<endl;while(1){cout<<"请设置密码:"<<endl;cin>>pwd;cout<<"请重复输入密码:"<<endl;cin>>pwdcfm;if(pwd==pwdcfm) {Ac.pwd=pwd; break;}else cout<<"两次输入密码不符!"<<endl;};cout<<"请输入户主姓名:"<<endl;cin>>;while(1){cout<<"请输入户主身份证号:"<<endl;cin>>Ac.ID;if(Ac.ID[17]) break;};Ac.remain=0;cout<<"账户创建完成!"<<endl;//写入账号文件fseek(fp,0,SEEK_END);fwrite(&Ac,sizeof(Ac),1,fp);//关闭文件fclose(fp);};void transfer(int FromNo){Account From,To,t;int no,flag=0;float money;cout<<"请输入目标账号"<<endl;cin>>no;cout<<"请输入金额"<<endl;cin>>money;FILE *Fr,*fp;fopen_s(&Fr,"账号信息.txt","ab+");while(fread(&From,sizeof(From),1,Fr)){if(From.No==FromNo) {fclose(Fr);break;}};if(From.remain<money) {cout<<"余额不足,不能转账!"<<endl;return;} fopen_s(&fp,"账号信息.txt","ab+");while(fread(&To,sizeof(To),1,fp)){if(To.No==no){flag=1;fclose(fp);break;}};if(flag) {From.remain-=money;To.remain+=money;cout<<"转账成功!"<<endl;fopen_s(&Fr,"账号信息.txt","rb+");while(fread(&t,sizeof(t),1,Fr)){if(t.No==FromNo) break;};cout<<From.remain<<endl;t.remain=From.remain;fseek(Fr,-size,1);fwrite(&t,sizeof(t),1,Fr);fclose(Fr);fopen_s(&fp,"账号信息.txt","rb+");while(fread(&t,sizeof(t),1,fp)){if(t.No==no) break;};cout<<To.remain<<endl;t.remain=To.remain;fseek(fp,-size,1);fwrite(&t,sizeof(t),1,fp);fclose(fp);WriteStat(From.No,To.No,money);}else {fclose(fp);cout<<"转账失败,未找到目标账户!"<<endl;} //打开账号文件};void SaveIn(int FromNo){float deposit;Account A;Stat S;FILE* Ac;fopen_s(&Ac,"账号信息.txt","rb+");while(fread(&A,sizeof(A),1,Ac)){if(A.No==FromNo) break;};cout<<"请输入存款数额:"<<endl;cin>>deposit;cout<<"ATM机确认收到"<<deposit<<"元"<<endl;A.remain+=deposit;fseek(Ac,-size,1);fwrite(&A,sizeof(A),1,Ac);//关闭文件fclose(Ac);//打开账号文件WriteStat(FromNo,0,deposit);};void TakeOut(int FromNo){float deposit;FILE* Ac;fopen_s(&Ac,"账号信息.txt","rb+");Account A;Stat S;while(fread(&A,sizeof(A),1,Ac)){if(A.No==FromNo) break;};cout<<"请输入取款数额:"<<endl;cin>>deposit;cout<<"已取出"<<deposit<<"元"<<endl;A.remain-=deposit;fseek(Ac,-size,1);fwrite(&A,sizeof(A),1,Ac);//关闭文件fclose(Ac);//打开账号文件WriteStat(FromNo,0,-deposit);};int ChangePwd(int FromNo){FILE* Ac;int flag=0;fopen_s(&Ac,"账号信息.txt","rb+");Account A;int pwd,npwd,npwdcfm;while(fread(&A,sizeof(A),1,Ac)){if(A.No==FromNo) break;};cout<<"请输入旧密码"<<endl;cin>>pwd;if(pwd==A.pwd){while(1){cout<<"请输入新密码"<<endl;cin>>npwd;cout<<"请重复输入新密码"<<endl;cin>>npwdcfm;if(npwd==npwdcfm){A.pwd=npwd;fseek(Ac,-size,1);fwrite(&A,sizeof(A),1,Ac);cout<<"修改成功!"<<endl;flag=1;break;}else cout<<"两次密码不符!"<<endl;}}else cout<<"密码错误!"<<endl;fclose(Ac);return flag;};void queryStat(int FromNo,int op){system("cls");//打开文件FILE* St;Stat s;fopen_s(&St,"账户明细.txt","rb+");if(St==NULL){printf("打开失败\n");return;}if(!op){while(fread(&s,sizeof(s),1,St)){if(s.No==FromNo){cout<<"操作日期:"<<s.year<<"年"<<s.mon<<"月"<<s.day<<"日"<<" "<<s.hour<<"-"<<s.min<<"-"<<s.sec<<endl;cout<<"金额:"<<s.money<<endl;cout<<"交互账号"<<s.ToNo<<endl;cout<<endl;}}fclose(St);}else if (op) {while(fread(&s,sizeof(s),1,St)){if(s.No==FromNo&&s.day>=(Times('d')-op)){cout<<"操作日期:"<<s.year<<"年"<<s.mon<<"月"<<s.day<<"日"<<" "<<s.hour<<"-"<<s.min<<"-"<<s.sec<<endl;cout<<"金额:"<<s.money<<endl;cout<<"交互账号"<<s.ToNo<<endl;cout<<endl;}}fclose(St);}};void showRemain(int FromNo){Account A;char i;int op;FILE* Ac;fopen_s(&Ac,"账号信息.txt","r");while(fread(&A,sizeof(A),1,Ac)){if(A.No==FromNo) break;};cout<<"卡内余额"<<A.remain<<"元"<<endl;cout<<"输入Y查询此账户明细"<<endl;fclose(Ac);cin>>i;if(i=='Y'||i=='y'){cout<<"请输入查询天数范围,如查询全部请输入0"<<endl;cin>>op;if(op==0) queryStat(FromNo,NULL);else queryStat(FromNo,op);}};void UserLogIn(){//打开账号文件system("cls");int No,pwd,flag=0;Account Ac;while(1){cout<<"请输入账号"<<endl;cin>>No;cout<<"请输入密码"<<endl;cin>>pwd;FILE *fp;fopen_s(&fp,"账号信息.txt","ab+");if(fp==NULL){cout<<"打开失败"<<endl;return;}while(fread(&Ac,sizeof(Ac),1,fp)){if(Ac.No==No&&Ac.pwd==pwd) flag=1;}fclose(fp);if(flag){char xz;while(1){system("CLS");cout<<"\n\t\ta.查询余额及明细\n"<<endl;cout<<"\n\t\tb.实时存款\n"<<endl;cout<<"\n\t\tc.取款\n"<<endl;cout<<"\n\t\td.转账\n"<<endl;cout<<"\n\t\te.修改密码\n"<<endl;cout<<"\n\t\tf.注销\n"<<endl;fflush(stdin);//清除输入缓冲区的回车符函数cin>>xz;if(xz=='a'||xz=='A'){system("CLS");showRemain(No);system("pause");}else if(xz=='b'||xz=='B'){SaveIn(No);system("pause");}else if(xz=='c'||xz=='C'){TakeOut(No);system("pause");}else if(xz=='d'||xz=='D'){transfer(No);system("pause");}else if(xz=='e'||xz=='E'){int i=0;i=ChangePwd(No);if(i) {fclose(fp);return ;}system("pause");}else if(xz=='f'||xz=='F'){fclose(fp);return ;}}break;}else cout<<"账号或密码错误!"<<endl;}//未查询到//查询到:if(Ac.pwd==pwd) {cout<<"登录成功"<<endl; break;} //查询到但密码不符cout<<"密码错误,请重新输入!"<<endl; //功能菜单:调用:查询余额、存款、取款、转账、修改密码//注销:关闭文件,并返回上一级菜单//};int _tmain(int argc, _TCHAR* argv[]){//首页菜单:创建账户,登录账户,退出系统char xz;while(1){system("cls");cout<<"a.创建账户 b.登录账户 c.退出系统"<<endl;cin>>xz;if (xz=='a') CreateAccount();else if(xz=='b')UserLogIn();else if(xz=='c') exit(0);system("pause");};return 0;}。