C语言如何实现银行ATM存取款系统

这篇文章给大家分享的是有关C语言如何实现银行ATM存取款系统的内容。小编觉得挺实用的，因此分享给大家做个参考，一起跟随小编过来看看吧。

一、课程设计的目的

掌握C语言程序设计的基础知识、基本理论、原理和实现技术。

二、课程设计的题目

银行ATM存取款系统

三、设计内容

（主要技术关键的分析、解决思路和方案比较等）

银行ATM存取款系统

银行ATM存取款系统业务描述如下：

银行ATM存取款系统能为用户提供存款、取款、查询、转账和修改密码的功能。

为了模拟真实的ATM业务环境，本系统必须实现存款、取款、查询、转账、修改密码以及开户的功能。

用户通过开户业务在本系统开立银行账户，之后可以通过该银行账户登陆ATM系统，在系统中实现存款、取款、查询账户信息、修改密码的操作。

本系统各个业务有如下注意点：

（1）登陆系统
用户登陆之前，必须在登陆界面输入其银行账户，通过其正确输入的银行账户登陆系统。
（2）开户业务
要使用本系统必须首先执行开户业务开立新的银行账户，并且将此新开的银行存储于文件当中。同时，系统以身份证号码作为开户的充分条件，即一个身份证号码只能开立一次银行账户。
（3）存款业务
客户登陆系统后，选择存款业务，即可以将输入的存款金额存入相应的账户。
（4）取款业务
客户登陆系统后，选择取款业务，即可以将输入的取款金额从相应的银行账户取出，但是取款金额必须大于目前的账户余额。
（5）查询业务
客户登陆系统后，可以选择查询业务，查询账户余额。
（6）转账业务
客户登陆系统后，可以选择转账业务，进行转账。注意的是转账的目的账户必须是本系统已经存在的银行账户。
（7）修改密码
客户登陆系统后，可以选择修改密码业务，进行密码修改。

实现的效果

源码

#include<stdio.h>#include<stdlib.h>#include<string.h>#define N 1000 #include<coNIO.h>struct chuhu{char idnum[9];//账户 char name[10];//姓名char idnumber[20];//省份证号   char passWord[7];//密码    double cunkuan;//存款 }hu[N]; void date();//显示当前日期int a,a1;//主界面选择变量 void Flag1();//主界面void Flag2();//用户界面 void Flag3();//用户功能选择界面void zhuce();//注册 int yanzheng();//验证存单号或密码 //&&&&&&&&&&&&&&&&&&&&&&&void qukaun();//取款void cunkaun();//存款void display();//查询void zhuan();//转账 void xiugai();//密码修改 void display();//查找 //&&&&&&&&&&&&&&&&&&&&&&&&&& int A,key;//开户人数  int i;//控制密码循环  char ch='y';//是否继续注册  double jin;//存的钱  int t; char id[11],password[7];int main(){system("COLOR 0A"); int b;Flag1();//引入主界面do{printf("\n\n\t\t##请输入你的选择：");scanf("%d",&a); switch(a){case 1:{zhuce();//zhuceFlag1(); break;}case 2:{b=yanzheng();fflush(stdin);///好东西，以防跳过数据Flag2();break;} case 3:exit(0);break;default:printf("\n\n\n\t\t您输入的数据不符合要求!!!\n\n\n\n\n");}}while(1);}void Flag1(){printf("\n#################################################################################\n");    printf("\n▓                          * 银行定期储蓄管理系统  *                           ▓\n");    printf("\n#################################################################################\n");printf("\n          ◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆\n");printf("          |◆|******|◆|                                     |◆|******|◆|\n");printf("          |◆|******|◆|       ☆ 开户业务    请按 1         |◆|******|◆|\n"); printf("          |◆|******|◆|       ☆ 登录系统    请按 2         |◆|******|◆|\n");printf("          |◆|******|◆|       ☆ 退出        请按 3         |◆|******|◆|\n");printf("          |◆|******|◆|                                     |◆|******|◆|\n");printf("          ◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆\n");printf("\n#################################################################################\n");} //用户界面 void Flag2(){       int a,b;//选择功能的变量   do{   printf("\n\n按ENTER键进入、返回主菜单 " ) ;   fflush(stdin);   scanf("%c",&ch);   system("cls");//清屏   date();     printf("\n#################################################################################\n");    printf("\n▓                               * 欢迎使用  *                                 ▓\n");    printf("\n#################################################################################\n");printf("\n          ◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆\n");printf("          |◆|******|◆|        ☆ 存款业务       请按 1        |◆|******|◆|\n"); printf("          |◆|******|◆|        ☆ 取款业务       请按 2        |◆|******|◆|\n");printf("          |◆|******|◆|        ☆ 查询业务       请按 3        |◆|******|◆|\n"); printf("          |◆|******|◆|        ☆ 转账业务       请按 4        |◆|******|◆|\n");printf("          |◆|******|◆|        ☆ 修改密码       请按 5        |◆|******|◆|\n");printf("          |◆|******|◆|        ☆ 退出系统       请按 6        |◆|******|◆|\n"); printf("          |◆|******|◆|                                        |◆|******|◆|\n");printf("          ◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆\n");    printf("\n#################################################################################\n");    printf("\n▓                          *******************************                    ▓\n");    printf("\n#################################################################################\n");printf("\n\n\t\t##请输入你的选择：");fflush(stdin);scanf("%d",&a);switch(a){//注册case 1: { system("cls");fflush(stdin);cunkaun();break;//存款} case 2:  {system("cls");fflush(stdin);qukaun();break;//取款}case 3: {display();//查询业务break;}case 4:{system("cls");fflush(stdin);zhuan();break;//转账 }case 5: {system("cls");fflush(stdin);xiugai();break;//密码修改}case 6: exit(0);default:printf("您输入的选择有误，请输入正确的选项：");                                                     } } while(1);} //用户功能选择界面 void Flag3(){printf("\n\n\t\t##请输入你的选择：");scanf("%d",&a1);switch(a1){case 1:printf("存款业务");break; case 2:printf("取款业务");break; case 3:printf("查询业务");break; case 4:printf("转账业务");break; case 5:printf("密码修改");break;case 6:printf("退出");break;  } }//开户 void zhuce(){FILE *nchuhu=fopen("chuh.txt","r");FILE *fchuhu=fopen("chuh.txt","a");int i;if((nchuhu=fopen("chuh.txt","r"))==NULL) printf("文件无，系统创建\n"); do{        system("cls");date();//显示当前日期 printf("\n\n\t\t请输入新储户的信息：");fscanf(nchuhu,"%s\t%s\t%s\t%s\t%lf\n",&hu[A].idnum,&hu[A].name,&hu[A].idnumber,&hu[A].password,&hu[A].cunkuan); printf("\n\n\t\t储户存单：");fflush(stdin);gets(hu[A].idnum);printf("\n\t\t姓名：");fflush(stdin);gets(hu[A].name);printf("\n\t\t储户密码（6位）：");for(i=0;i<6;i++){fflush(stdin);hu[A].password[i]=getch();printf("*");//scanf("%d",&hu[A].password[i]);} do{printf("请输入省份证号码(18位)：");fflush(stdin);gets(hu[A].idnumber);if(strlen(hu[A].idnumber)!=18)//strlen 代表的意思printf("\n\t\t输入错误！\n\t\t身份证请输入18位数字或者字母\n");for(i=0;i<A;i++)if(strcmp(hu[A].idnumber,hu[i].idnumber)==0&&strcmp(hu[A].name,hu[i].name)==0) break;if(i<A)   printf("\n\n\t\t前面已经有人用此身份证注册过\n\n\t\t请重新输入省份证号：\n");   }while((strlen(hu[A].idnumber)!=18)||(strcmp(hu[A].idnumber,hu[i].idnumber)==0)&&(strcmp(hu[A].name,hu[i].name)!=0) );printf("输入存储的金额：");fflush(stdin);scanf("%lf",&hu[A].cunkuan);fprintf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[A].idnum,hu[A].name,hu[A].idnumber,hu[A].password,hu[A].cunkuan);A++;printf("是否继续是(y)/否(n)?");fflush(stdin);scanf("%c",&ch); }while(ch=='y'||ch=='Y');printf("存入成功！");//system("pause");system("cls");fclose(nchuhu);fclose(fchuhu);}//验证存单号或密码 int yanzheng(){FILE *fchuhu=fopen("chuh.txt","r");int count=0;char id[9];for(i=0;i<=100;i++){fscanf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",&hu[i].idnum,&hu[i].name,&hu[i].idnumber,&hu[i].password,&hu[i].cunkuan);}do{system("cls");    printf("\n\n\n\t\t$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n");printf("\t\t|#|                                                          |#|\n");printf("\t\t|#|                    ☆☆☆☆☆☆☆☆☆☆                  |#|\n");printf("\t\t|#|                    ☆                ☆                  |#|\n");printf("\t\t|#|             ☆   存单号或者密码有误自动返回   ☆         |#|\n");printf("\t\t|#|                    ☆                ☆                  |#|\n");printf("\t\t|#|                    ☆☆☆☆☆☆☆☆☆☆                  |#|\n");printf("\t\t|#|                                                          |#|\n");printf("\t\t$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n");printf("\n\n\n\t\t      请输入您的存单号：  ");scanf("%s",&id);printf("\n\n\n\t\t      请输入您的密码：  ");for(i=0;i<6;i++){fflush(stdin);password[i]=getch();printf("*");} password[6]='\0';fflush(stdin);scanf("c",&ch);printf("\n\n\t\t");for(i=0;i<99;i++){if(strcmp(id,hu[i].idnum)==0&&strcmp(password,hu[i].password)==0){fclose(fchuhu);return 0;}}}while(count==0);fclose(fchuhu);return count;}//存款void cunkaun(){FILE *fchuhu=fopen("chuh.txt","r");FILE *achuhu=fopen("back.txt","w");char id[9];int i;if(!fchuhu) printf("不能打开文件：");if(!achuhu) printf("不能创建文件");for(i=0;i<=100;i++){fscanf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",&hu[i].idnum,&hu[i].name,&hu[i].idnumber,&hu[i].password,&hu[i].cunkuan);}//int x=0;date();printf("\n\n\t\t##请再次输入并确认存单：");scanf("%s",&id);for(i=0;i<=100;i++){if(strcmp(id,hu[i].idnum)==0){   printf("\n\n");  printf("\t\t||================================================================||\n"); printf("\t\t||                           *存款金额*                           ||\n"); printf("\t\t||================================================================||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||         1、200        2、400        3、600        4、800       ||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||                                                                ||\n");    printf("\t\t||         5、1000        6、2000        7、4000        8、6000   ||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||================================================================||\n"); printf("\t\t||================================================================||\n"); printf("\n\n\t\t\t请输入你的取款金额："); scanf("%d",&a); switch(a){ case 1:{jin=200;  printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");     hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 2:{jin=400;     printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");      hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 3:{ jin=600;  printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");      hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 4:{ jin=800;  printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");     hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; }  case 5:{jin=1000;  printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");     hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 6:{jin=2000;  printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");     hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 7:{ jin=4000;  printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");     hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 8:{ jin=6000;  printf("\t\t\t存款%lf元",jin);     printf("\n\n\n\t\t\t^^^^存款成功^^^^");     hu[i].cunkuan+=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } default:printf("\n\n\n\t\t\t您的选择金额不在服务范围内！！！\n\n\n\t\t\t请重新选择业务：");   }fclose(fchuhu);            fclose(achuhu);            system("del chuh.txt");              rename("back.txt","chuh.txt");//rename(旧的，新的）                 break;}}}//取款 void qukaun(){FILE *fchuhu=fopen("chuh.txt","r");FILE *achuhu=fopen("back.txt","w");int i;char id[9];if(!fchuhu) printf("不能打开文件：");if(!achuhu) printf("不能创建新文件：");for(i=0;i<=100;i++){fscanf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",&hu[i].idnum,&hu[i].name,&hu[i].idnumber,&hu[i].password,&hu[i].cunkuan);} date(); printf("\n\n\t\t请再次输入并确认存单："); scanf("%s",&id); for(i=0;i<=99;i++){ if(strcmp(id,hu[i].idnum)==0){     printf("\n\n");      printf("\t\t||================================================================||\n"); printf("\t\t||                           *取款金额*                           ||\n"); printf("\t\t||================================================================||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||         1、200        2、400        3、600        4、800       ||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||                                                                ||\n");    printf("\t\t||         5、1000        6、2000        7、4000        8、6000   ||\n"); printf("\t\t||                                                                ||\n"); printf("\t\t||================================================================||\n"); printf("\t\t||================================================================||\n"); printf("\n\n\t\t\t请输入你的取款金额："); scanf("%d",&a); switch(a){ case 1:{jin=200; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");     hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 2:{jin=400; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");     hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 3:{ jin=600; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");      hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 4:{ jin=800; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");     hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; }  case 5:{jin=1000; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");     hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 6:{jin=2000; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");     hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 7:{ jin=4000; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");     hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } case 8:{ jin=6000; printf("\t\t\t取出%lf元",jin);     printf("\n\n\n\t\t\t^^^^取款成功^^^^");     hu[i].cunkuan-=jin;    printf("\n\n\t\t\t$您的余额为：%lf",hu[i].cunkuan);    fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);break; } default:printf("\n\n\n\t\t\t您的选择金额不在服务范围内！！！\n\n\n\t\t\t请重新选择业务：");   }fclose(fchuhu);             fclose(achuhu);             system("del chuh.txt");             rename("back.txt","chuh.txt");break; } }}//转账void zhuan(){FILE *fchuhu=fopen("chuh.txt","r+");int i;char id[9];if(!fchuhu) printf("不能打开文件：");for(i=0;i<=100;i++){fscanf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",&hu[i].idnum,&hu[i].name,&hu[i].idnumber,&hu[i].password,&hu[i].cunkuan);} date(); printf("\n\n\t\t请输入转账人的存单号："); scanf("%s",&id); for(i=0;i<=99;i++){ if(strcmp(id,hu[i].idnum)==0){       printf("\n\n\t\t请输入要转账的金额：");   scanf("%lf",&jin);   printf("\n\n\t\t请确认数目：%lf",jin);  hu[i].cunkuan+=jin; printf("\n\n\n转账成功");  fprintf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[A].idnum,hu[A].name,hu[A].idnumber,hu[A].password,hu[A].cunkuan); fclose(fchuhu);fclose(fchuhu); break; } }} //********************************************************************************************************************void xiugai(){FILE *fchuhu=fopen("chuh.txt","r");FILE *achuhu=fopen("back.txt","w");int j,i;char id[9];if(!fchuhu) printf("不能打开文件：");if(!achuhu) printf("不能创建新文件：");for(i=0;i<=100;i++){fscanf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",&hu[i].idnum,&hu[i].name,&hu[i].idnumber,&hu[i].password,&hu[i].cunkuan);} date(); printf("\n\n\t\t请再次输入并确认存单："); scanf("%s",&id); for(i=0;i<=99;i++){ if(strcmp(id,hu[i].idnum)==0){ printf("请输入新的密码：\n"); printf("\n\t\t储户密码（6位）：");for(j=0;j<6;j++){fflush(stdin);hu[i].password[j]=getch();printf("*");}  printf("\n\n\t\t新的密码：%s\n",hu[i].password);  printf("\n\n\t\t修改成功");  fprintf(achuhu,"%s\t%s\t%s\t%s\t%lf\n",hu[A].idnum,hu[A].name,hu[A].idnumber,hu[A].password,hu[A].cunkuan); fclose(fchuhu);fclose(achuhu);system("del chuh.txt");rename("back.txt","chuh.txt"); break; } }}//&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&//查询信息 void display(){FILE *fchuhu=fopen("chuh.txt","r");int i,n=0;char fnumb[9];system("cls");for(i=0;i<=100;i++){fscanf(fchuhu,"%s\t%s\t%s\t%s\t%lf\n",&hu[i].idnum,&hu[i].name,&hu[i].idnumber,&hu[i].password,&hu[i].cunkuan);}printf("\n\n●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●\n");printf("\n\n              ●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●                      \n");printf("\n\n                              ●●●●●●●●●●●●●●●●●●●●●●●●●●                                              \n");printf("\n\n\n\t\t\t\t\t请输入你的存单号：");scanf("%s",&fnumb);printf("\n\n\n");printf("\t\t\t\t\t您的个人信息如下：");printf("\n\n");for(i=0;i<=99;i++)if(strcmp(fnumb,hu[i].idnum)==0){printf("存单号：%s\t姓名：%s\t身份证：%s\t密码：%s\t存款金额：%lf\n",hu[i].idnum,hu[i].name,hu[i].idnumber,hu[i].password,hu[i].cunkuan);n=1;fclose(fchuhu);system("pause");             break; }if(n==0) printf("此账单不存在！！！\n");fclose(fchuhu);}//********************************************************************************************************************void date(){//显示当前日期printf("当前日期：");system("date/t");printf("当前时间：");system("time/t"); }

业务流程

1、用户开户

2、登录流程

3、密码修改

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