银行管理系统

#define N 1000#include<stdio.h>#include<conio.h>//密码用#include<stdlib.h>#include<string.h>#include<time.h>void denglu1();void denglu2();void denglu3();void jiemian();void lianjie();void menu();void menu2();void kaihu();void cunkuan();void qukuan();void chazhang();void zhuanzhang();void tuichu();void liebiao();void chaxun();void zhuxiao();void qumi();void khcg();void gaimi();void namesort();void zhanghaosort();void yuesort();void all();/*定义结构体*/int count=2;int flag1,flag2,flag3,flag4,flag5,flag6;//设置哨兵int count2=0;//三次密码不对就退出struct bank{char name[20];//姓名char num1[15];//身份证char num2[20];//账号char num3[7];//密码float money;}user[N],admin,temp;/*初始化用户*/void chushihua(){//设置管理员strcpy(,"黎小锋");strcpy(admin.num1,"42800119981318");strcpy(admin.num2,"admin");strcpy(admin.num3,"admin");//初始化一个用户strcpy(user[0].name,"黎小锋");strcpy(user[0].num1,"42800119981318");strcpy(user[0].num2,"6218481751365602811"); //黎小锋6218481751365602811 江珊 6218480751365103456strcpy(user[0].num3,"666888"); //6228480750365user[0].money=5000;//初始化第二个用户strcpy(user[1].name,"江珊");strcpy(user[1].num1,"42800119981319");strcpy(user[1].num2,"6218480751365103456");strcpy(user[1].num3,"666888");user[1].money=4000;}/*主函数*/void main(){chushihua();lianjie();denglu1();}/*欢迎界面*/void jiemian(){printf("\n");printf("\n");printf("\n");printf("\t*****************************★★★*****************************\n");printf("\t* *\n");printf("\t* *\n");printf("\t* ☆欢迎进入中国银行☆*\n");printf("\t* *\n");printf("\t* *\n");printf("\t*****************************★★★*****************************\n");}/*连接缓冲*/void lianjie(){int i,j;system("cls");system("color 3e");jiemian();printf("\n");printf("\n");printf("\n");printf("\t\t连接登陆中：");for(j=0;j<17;j++){for(i=0;i<10000000;i++);if(j%2==0){printf("★");}else printf("☆");}}/*登录主界面*/void denglu1(){system("cls");int i;system("color 4e");jiemian();printf("\n");printf("\n");printf("\n");printf("\t\t\t 请选择您要办理的业务:\n");printf("\t\t\t\t ★1.管理登录\n");printf("\t\t\t\t ☆2.用户登录\n");printf("\t\t\t\t ★3.申请账号\n");printf("\t\t\t\t ☆4.退出\n");printf("\t\t\t 请输入您要办理的项目:");fflush(stdin);scanf("%d",&i);switch(i){case 1: lianjie();denglu3();break;case 2: lianjie();denglu2();break;case 3: lianjie();kaihu();break;case 4: lianjie();tuichu();break;default:printf("\t\t\t 输入错误，请您在1——4之间选择!\n");denglu1();break;}}void menu2(){int i;system("cls");system("color 3e");jiemian();printf("\n");printf("\n");printf("\n");printf("\t\t\t 登陆成功! 请选择操作项目:\n");printf("\t\t\t\t ★1.用户列表\n"); //查看所有的用户列表printf("\t\t\t\t ☆2.查询用户\n");printf("\t\t\t\t ★3.注销用户\n");printf("\t\t\t\t ★4.找回密码\n");printf("\t\t\t\t ☆5.退出\n");printf("\t\t\t\t ★6.返回\n");printf("\t\t\t 请输入您要办理的项目:");scanf("%d",&i);switch(i){case 1: lianjie();liebiao();break;case 2: lianjie();chaxun();break;case 3: lianjie();zhuxiao();break;case 4: lianjie();qumi();break;case 5: lianjie();tuichu();break;case 6:lianjie();denglu1();break;default:printf("\t\t\t 输入错误，请您在1——6之间选择!\n");break;}}/*管理员登录*/void denglu3(){int m,n;char select1,select2;char x[20];//账号char y[7];//密码char *passwd;system("cls");system("color 4e");jiemian();printf("\n");printf("\n");printf("\n");printf("\t\t\t 您选择了管理登录!\n");fflush(stdin);printf("\t\t\t 请输入管理员账号:");scanf("%s",x);fflush(stdin);printf("\t\t\t 请输入管理员密码:");passwd=y;while((*passwd=getch())!='\r') //不是回车{putch('*'); //用*替换显示fflush(stdin);passwd++;}*passwd='\0';printf("\n");m=strcmp(x,admin.num2);n=strcmp(y,admin.num3);if(m==0){if(n==0){lianjie();menu2();}else{printf("\t\t\t 您的密码有误,请重新输入!\n");_sleep(1600);printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();denglu1();}else{lianjie();tuichu();}}}else{printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");scanf("%c",&select2);if(select2=='Y'||select2=='y'){lianjie();denglu1();}else{lianjie();tuichu();}}}/*普通用户登录*/void denglu2(){char x[20];//账号char y[7];//密码char select1,select2;char *p;int m,n,o;system("cls");system("color 4e");jiemian();p=y;printf("\n");printf("\n");printf("\n");printf("\t\t\t 您选择了登录!\n");fflush(stdin);printf("\t\t\t 请输入您的账号:");scanf("%s",x);fflush(stdin);printf("\t\t\t 请输入您的密码:");while((*p=getch())!='\r') //不是回车{putch('*'); //用*替换显示fflush(stdin);p++;}*p=0;printf("\n");int i;for(i=0;i<=count;i++){o=strcmp(x,user[i].num2);if(o==0)break;}if(i>count){printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");scanf("%c",&select2);if(select2=='Y'||select2=='y'){lianjie();denglu2();}else{lianjie();tuichu();}}else{m=strcmp(x,user[i].num2);n=strcmp(y,user[i].num3);if(m==0){if(n==0){ flag1=i;lianjie();menu();}else{printf("\t\t\t 您的密码有误,请重新输入!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");scanf("%c",&select1);if(select1=='Y'||select1=='y'){count2++;if(count2>=3){printf("\t\t\t 对不起，三次密码不正确!\n");exit(0);}lianjie();denglu2();}else{lianjie();tuichu();}}}}}/*主界面菜单*/void menu(){system("cls");int i;system("color 4e");jiemian();printf("\n");printf("\n");printf("\n");printf("\t\t\t 请选择您要办理的业务:\n");printf("\t\t\t\t ★1.开户\n");printf("\t\t\t\t ☆2.存款\n");printf("\t\t\t\t ★3.取款\n");printf("\t\t\t\t ☆4.查询余额\n");printf("\t\t\t\t ★5.转账\n");printf("\t\t\t\t ☆6.修改密码\n");printf("\t\t\t\t ★7.退出\n");printf("\t\t\t\t ☆8.返回\n");printf("\t\t\t 请输入您要办理的项目:");scanf("%d",&i);switch(i){case 1: lianjie();kaihu();break;case 2: lianjie();cunkuan();break;case 3: lianjie();qukuan();break;case 4: lianjie();chazhang();break;case 5: lianjie();zhuanzhang();break;case 6:lianjie();gaimi();break;case 7: lianjie();tuichu();break;case 8: lianjie();denglu1();break;default:printf("\t\t\t 输入错误，请您在1——8之间选择!\n");break;}}/*实现退出*/void tuichu(){system("cls");jiemian();system("color 0e");printf("\n");printf("\n");printf("\n");printf("\t\t\t 谢谢您的惠顾!\n");}/*实现开户*/void kaihu(){char num1[7],num2[7],select1;int n;char m[7],a[20]="6228480750365";system("cls");jiemian();system("color 9e");printf("\n");printf("\n");printf("\n");printf("\t\t\t 您选择了开户业务!\n");printf("\t\t\t 请输入您的姓名:");fflush(stdin);scanf("%s",user[count].name);printf("\t\t\t 请输入您的身份证号:");fflush(stdin);scanf("%s",user[count].num1);printf("\t\t\t 请输入密码:");fflush(stdin);scanf("%s",num1);printf("\t\t\t 请确认您的密码:");fflush(stdin);scanf("%s",num2);n=strcmp(num1,num2);if(n==0){srand((unsigned)time(NULL));n=rand()%100000+100000;sprintf(m,"%d",n);strcpy(user[count].num3,num1);strcat(a,m);strcpy(user[count].num2,a);flag2=count;count++;lianjie();khcg();}else{printf("\t\t\t 您两次的密码不一致，请重新输入\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();kaihu();}else{lianjie();tuichu();}}}/*开户成功*/void khcg(){int i;system("cls");jiemian();system("color 9e");user[flag2].money=0;printf("\t\t\t 恭喜您开户成功!请记住您的账号密码!\n");printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag2].name,user[flag2].num2,user[flag 2].money);printf("\t\t\t 请选择您要办理的业务:\n");printf("\t\t\t 1.返回登录\t2.退出\n");printf("\t\t\t 您的选择为:");fflush(stdin);scanf("%d",&i);switch(i){case 1:lianjie();denglu1();break;case 2:lianjie();tuichu();break;default:printf("\t\t\t 选择错误，请在1——2间选择!\n");_sleep(1600);khcg();}}/*实现存款*/void cunkuan(){ float money;char select1,select2;system("cls");jiemian();system("color 2e");printf("\n");printf("\n");printf("\n");printf("\t\t\t 您选择了存款业务!\n");printf("\t*****************************★★★*****************************\n");printf("\t\t\t 请输入您存款的金额:");scanf("%f",&money);if(money<0){printf("\t\t\t金额不能为负，请重新存款!\n");_sleep(1600);cunkuan();}else{printf("\t\t\t 请确认您的信息:\n");printf("\t 用户名\t\t\t账号\t\t\t存款数额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag1].name,user[flag1].num2,money);printf("\t\t\t 是否存款?(Y为确定，其他键返回):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){system("cls");jiemian();system("color 2e");user[flag1].money=user[flag1].money+money;fflush(stdin);printf("\t\t\t 恭喜您存款成功!\n");printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag1].name,user[flag1].num2,user[flag 1].money);printf("\t*****************************★★★*****************************\n");printf("\t\t\t 请选择!(Y返回，其他键退出):");printf("\t\t\t\t 您的选择为:");fflush(stdin);scanf("%c",&select2);if(select2=='Y'||select2=='y'){menu();}else{lianjie();tuichu();}}else{cunkuan();}}}/*实现取款*/void qukuan(){float money;char select1,select2;system("cls");jiemian();system("color 3e");printf("\n");printf("\n");printf("\n");printf("\t\t\t 您选择了取款业务!\n");printf("\t\t\t 请您输入取款的金额:");scanf("%f",&money);if(money<0){printf("\t\t\t金额不能为负，请重新取款!\n");_sleep(1600);qukuan();}else{printf("\t*****************************★★★*****************************\n");if(user[flag1].money<money){printf("\t\t\t 您的金额不足!(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){qukuan();}else{lianjie();tuichu();}}else{user[flag1].money=user[flag1].money-money;printf("\t\t\t 取款成功!您的余额为:\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag1].name,user[flag1].num2,user[flag 1].money);printf("\t*****************************★★★*****************************\n");printf("\t\t\t 请选择您要办理的业务:\n");printf("\t\t\t 您的选择为:(Y返回登录，其他键退出)");fflush(stdin);scanf("%c",&select2);if(select2=='Y'||select2=='y'){menu();}else{lianjie();tuichu();}}}}/*实现查账*/void chazhang(){char select1;system("cls");jiemian();system("color 5e");printf("\n");printf("\n");printf("\n");printf("\t\t\t 您选择了查账业务!\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag1].name,user[flag1].num2,user[flag 1].money);printf("\t*****************************★★★*****************************\n");printf("\t\t\t 请选择您要办理的业务:\n");printf("\t\t\t 您的选择为:(Y返回登录，其他键退出)");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){menu();}else{lianjie();tuichu();}}/*实现转账*/void zhuanzhang(){int a,b;char num1[20],num2[20];char select1,select2;float money;system("cls");jiemian();system("color 6e");printf("\n");printf("\n");printf("\n");printf("\t\t\t 您选择了转账业务!\n");printf("\t*****************************★★★*****************************\n");printf("\t\t\t 请输入您要转账的账户:");fflush(stdin);gets(num1);int i;for(i=0;i<=count;i++){a=strcmp(num1,user[i].num2);if(a==0)break;}if(i>count){printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");scanf("%c",&select2);if(select2=='Y'||select2=='y'){lianjie();zhuanzhang();}else{lianjie();tuichu();}}else{printf("\t\t\t 请重新输入要转账的账户:");fflush(stdin);gets(num2);b=strcmp(num1,num2);if(b==0){flag3=i;printf("\t\t\t 请输入您要转账的金额:");scanf("%f",&money);if(money<0){printf("\t\t\t金额不能为负，请重新输入!\n");zhuanzhang();}else{if(money>user[flag1].money){printf("\t\t\t 您卡中余额不足!\n");lianjie();zhuanzhang();}else{user[flag1].money=user[flag1].money-money;user[flag3].money=user[flag3].money+money;printf("\t\t\t 恭喜您，转账成功!\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag1].name,user[flag1].num2,user[flag 1].money);printf("\t\t\t 是否重新输入？(Y返回，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();menu();}else{lianjie();tuichu();}}}}else{printf("\t\t\t 对不起您两次输入的账号不一致，请重新输入!\n");zhuanzhang();}}}/*修改密码*/void gaimi(){int n;char pwd1[7],pwd2[7],select2;system("cls");jiemian();printf("\n");printf("\t\t\t 您选择了修改密码!\n");printf("\t\t\t 请输入新密码:");fflush(stdin);scanf("%s",pwd1);printf("\t\t\t 请确认您的新密码:");fflush(stdin);scanf("%s",pwd2);n=strcmp(pwd1,pwd2);if(n==0){strcpy(user[flag1].num3,pwd1);printf("\t\t\t 恭喜您改密成功，请记住您的新密码!\n");printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag1].name,user[flag1].num2,user[flag 1].money);printf("\t*****************************★★★*****************************\n");printf("\t\t\t 您的新密码是%s,请记住您的新密码!\n",user[flag1].num3);printf("\t\t\t 请选择!(Y返回，其他键退出):");printf("\t\t\t\t 您的选择为:");fflush(stdin);scanf("%c",&select2);if(select2=='Y'||select2=='y'){menu();}else{lianjie();tuichu();}}else{printf("\t\t\t 您两次输入的密码有误,请重新输入!\n");gaimi();}}/*管理员查看用户列表*/void liebiao(){int i;system("cls");jiemian();printf("\n");printf("\t\t\t 您选择了用户列表功能!\n");printf("\t\t请选择排序种类!\t1.按姓名排序 2.按账号排序 3.按余额排序\n");printf("\t\t\t 请选择排序种类:");fflush(stdin);scanf("%d",&i);switch(i){case 1:namesort();break;case 2:zhanghaosort();break;case 3:yuesort();break;default:printf("请在1——3之间选择!\n");liebiao();break;}}/*显示所有用户信息*/void all(){int i;printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");for(i=0;i<count;i++){printf("\t %s\t\t%s\t\t%0.2f\n",user[i].name,user[i].num2,user[i].money);}printf("\t*****************************★★★*****************************\n");}/*按姓名排序*/void namesort(){int i,j,k;char select1;for(i=0;i<count;i++){for(j=0;j<count-1;j++){k=strcmp(user[j].name,user[j+1].name);if(k>0){temp=user[j];user[j]=user[j+1];user[j+1]=temp;}}}all();printf("\t\t\t 是否重新输入？(Y返回，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();menu2();}else{lianjie();tuichu();}}/*按账号排序*/void zhanghaosort(){int i,j,k;char select1;for(i=0;i<count;i++){for(j=0;j<count-1;j++){k=strcmp(user[j].num2,user[j+1].num2);if(k>0){temp=user[j];user[j]=user[j+1];user[j+1]=temp;}}}all();printf("\t\t\t 是否重新输入？(Y返回，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();menu2();}else{lianjie();tuichu();}}/*按照余额排序*/void yuesort(){int i,j;char select1;for(i=0;i<count;i++){for(j=0;j<count-1;j++){if(user[j].money>user[j+1].money){temp=user[j];user[j]=user[j+1];user[j+1]=temp;}}}all();printf("\t\t\t 是否重新输入？(Y返回，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();menu2();}else{lianjie();tuichu();}}/*管理员查询用户*/void chaxun(){int i,j,a,b,c;char name[20],num[20],num1[20],select2,select1,select3;system("cls");jiemian();printf("\n");printf("\t\t\t 您选择了查询功能!\n");printf("\t\t请选择排序种类!\t1.按姓名查询 2.按账号查询 3.按身份证查询\n");printf("\t\t\t 请选择查询的种类:");fflush(stdin);scanf("%d",&i);if(i==1){printf("\t\t\t 请输入您要查询卡号的用户名:");fflush(stdin);scanf("%s",name);for(j=0;j<count;j++){a=strcmp(name,user[j].name);if(a==0)break;}if(j>=count){printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select2);if(select2=='Y'||select2=='y'){lianjie();chaxun();}else{lianjie();tuichu();}}else{flag4=j;printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag4].name,user[flag4].num2,user[flag 4].money);printf("\t\t\t 是否重新输入？(Y返回，其他键退出):");fflush(stdin);scanf("%c",&select3);if(select3=='Y'||select3=='y'){lianjie();menu2();}else{lianjie();tuichu();}}}else if(i==2){printf("\t\t\t 请输入您要查询卡号:");fflush(stdin);scanf("%s",num);for(j=0;j<count;j++){b=strcmp(num,user[j].num2);if(b==0)break;}if(j>=count){printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();chaxun();}else{lianjie();tuichu();}}else{flag4=j;printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag4].name,user[flag4].num2,user[flag 4].money);printf("\t\t\t 是否重新输入？(Y返回，其他键退出):");fflush(stdin);scanf("%c",&select3);if(select3=='Y'||select3=='y'){lianjie();menu2();}else{lianjie();tuichu();}}}else if(i==3){printf("\t\t\t 请输入您要查询卡号的身份证:");fflush(stdin);scanf("%s",num1);for(j=0;j<count;j++){c=strcmp(num1,user[j].num1);if(c==0)break;}if(j>=count){printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();chaxun();}else{lianjie();tuichu();}}else{flag4=j;printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t\t账号\t\t\t账户余额\n");printf("\t %s\t\t%s\t\t%0.2f\n",user[flag4].name,user[flag4].num2,user[flag 4].money);printf("\t\t\t 是否重新输入？(Y返回，其他键退出):");fflush(stdin);scanf("%c",&select3);if(select3=='Y'||select3=='y'){lianjie();menu2();}else{lianjie();tuichu();}}}else{printf("\t\t\t 您输入有误,请在1——3之间选择!\n");chaxun();}}/*管理员注销用户*/void zhuxiao(){char num[20],select1,select2;int b,j;system("cls");jiemian();printf("\n");printf("\t\t\t 您选择了注销功能!\n");printf("\t\t\t 请输入您要注销的卡号:");fflush(stdin);scanf("%s",num);for(j=0;j<count;j++){b=strcmp(num,user[j].num2);if(b==0)break;}if(j>=count){printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();zhuxiao();}else{lianjie();tuichu();}}else{count--;flag5=j;strcpy(user[flag5].name,"");strcpy(user[flag5].num1,"");strcpy(user[flag5].num2,"");strcpy(user[flag5].num3,"");user[flag5].money=0;for(;j<count;j++){user[j]=user[j+1];}printf("\t\t\t 恭喜您,注销账户成功!\n");printf("\t\t\t Y返回，其他键退出:");fflush(stdin);scanf("%c",&select2);if(select2=='Y'||select2=='y'){lianjie();menu2();}else{lianjie();tuichu();}}}/*管理员帮用户取回密码*/void qumi(){int i,a,b;char name[20],num[20],select1,select2,select3;system("cls");jiemian();printf("\n");printf("\t\t\t 您选择了取回密码功能!\n");printf("\t\t\t 请输入您的姓名:");fflush(stdin);scanf("%s",name);for(i=0;i<count;i++){a=strcmp(name,user[i].name);if(a==0)break;}if(i>=count){printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select1);if(select1=='Y'||select1=='y'){lianjie();qumi();}else{lianjie();tuichu();}}else{flag6=i;printf("\t\t\t 请输入您的身份证号:");fflush(stdin);scanf("%s",num);b=strcmp(num,user[flag6].num1);if(b==0){printf("\t\t\t 请记住您的密码!\n");printf("\t*****************************★★★*****************************\n");printf("\t 用户名\t\t账号\t\t密码\t\t账户余额\n");printf("\t %s\t%s\t%s\t\t%0.2f\n",user[flag6].name,user[flag6].num2,user[fl ag6].num3,user[flag6].money);printf("\t*****************************★★★*****************************\n");printf("\t\t\t Y返回，其他键退出:");fflush(stdin);scanf("%c",&select3);if(select3=='Y'||select3=='y'){lianjie();menu2();}else{lianjie();tuichu();}}else{printf("\t\t\t 不存在这个用户!\n");printf("\t\t\t 是否重新输入？(Y重新进入，其他键退出):");fflush(stdin);scanf("%c",&select2);if(select2=='Y'||select2=='y'){lianjie();qumi();}else{lianjie();tuichu();}}}}。