#include <stdio.h> #include <stdlib.h> #include <conio.h> #include <string.h> void openaccount();//開戶 void save();//存款 void withdraw();//取款 void showAccount();//查詢 void transferAccounts();//轉賬 void reportLoss(); //掛失 void cancelLoss(); //解除掛失 void cancelAccount(); //注銷賬戶 void updatePassword();  //更改密碼 int load();//登陸賬號 int accountnum=0;//定義全局變量，用來計算賬戶數目 int nowaccount=0;//登錄成功是的賬戶 struct Bank {   char account[20]; //賬號   char password[10]; //密碼   char name[20];  //用戶名   int balance;//賬戶余額   int state;//狀態 };  //結構體 struct Bank banks[100]; int load() {   int right=0,i=0,j;   int r1,r2;   char ch;   char account1[20]= {0};   char password1[10]= {0};   printf("登陸/n請輸入賬號：/n");   scanf("%s",account1);   printf("請輸入密碼：/n");   while((ch=getch())!='/r')   {     password1[i++]=ch;     putchar('*');   }   for(j=0; j<accountnum; j++)   {     r1=strcmp(account1,banks[j].account);     r2=strcmp(password1,banks[j].password);     if(r1==0&&r2==0)     {       nowaccount=j;       if(banks[j].state==0)       {         printf("登錄成功！/n");//登錄成功         right=1;       }       else if(banks[j].state==1)       {         printf("您的賬戶處于掛失狀態,請解掛/n");         right=3;       }       else if(banks[j].state==2)       {         printf("賬戶已經銷戶/n");         right=2;       }       break;     }   }    if(right==0)     printf("登陸失??！/n");   return right; } int main() {   int i=0,num;   char a[100];   FILE *fp;   if((fp=fopen("account.txt","r"))==NULL)   {     if((fp=fopen("account.txt","w"))==NULL)     {       printf("失??！/n");       exit(1);     }   }   while(fscanf(fp,"%s%s%s%d%d",banks[i].account,banks[i].name,banks[i].password,&banks[i].balance,&banks[i].state)!=EOF)   {     accountnum++;     i++;   }   fclose(fp);   printf("歡迎來到我的銀行/n");   while(1)   {     printf("請選擇業務:/n");     printf("1.開戶  2.存款  3.取款/n");     printf("4.查詢  5.轉賬  6.掛失/n");     printf("7.解掛  8.銷戶  9.改密/n");     printf("-1.退出/n");     scanf("%s",a);     num=atoi(a);     if(num==1)       openaccount();//開戶     else if(num==2)       save();//存款     else if(num==3)       withdraw();//取款     else if(num==4)       showAccount();//查詢     else if(num==5)       transferAccounts();//轉賬     else if(num==6)       reportLoss(); //掛失     else if(num==7)       cancelLoss(); //解掛     else if(num==8)       cancelAccount(); //注銷賬戶     else if(num==9)       updatePassword();  //更改密碼     else if(num==-1)     {       printf("歡迎下次再來/n");       break;     }      else       printf("抱歉，沒有此業務/n");   }   if((fp=fopen("account.txt","w"))==NULL)   {     printf("失?。?n");     exit(1);   }   for(i=0; i<accountnum; i++)   {     fprintf(fp,"%s/t%s/t%s/t%d/t%d/n",banks[i].account,banks[i].name,banks[i].password,banks[i].balance,banks[i].state);   }   fclose(fp);   return 0; } void openaccount() {    int i=0,j=0;   int r;   char ch;   char password1[10]= {0};   printf("賬戶（十位數）：/n");   scanf("%s",banks[accountnum].account);   while(banks[accountnum].account[i]!='/0')     i++;   if(i!=10)   {     printf("輸入賬號有誤/n");     return;   }   i=0;   printf("姓名：/n");   scanf("%s",banks[accountnum].name);   printf("密碼：/n");   while((ch=getch())!='/r')   {     banks[accountnum].password[i++]=ch;     putchar('*');   }   printf("/n");   printf("再次輸入密碼：/n");   while((ch=getch())!='/r')   {     password1[j++]=ch;     putchar('*');   }   printf("/n");   r=strcmp(banks[accountnum].password,password1);   if(r!=0)   {      printf("兩次密碼不相同，開戶失??！/n");     return;   }   banks[accountnum].balance=0;   banks[accountnum].state=0;   accountnum++;   printf("開戶成功/n"); } void save() {   if(load()!=1)     return;   char addmoney[10];//存入金額   int money;//將字符型轉化為int型   int i=0;   printf("存入金額:/n");   scanf("%s",addmoney);   while(addmoney[i]!='/0')   {     if(addmoney[i]<'0'||addmoney[i]>'9')     {       printf("輸入格式錯誤！/n");       return;     }     i++;   }   while(addmoney[i]!='/0')   {     if(i>9)     {       printf("金額超限/n");       return;     }     i++;   }   money=atoi(addmoney);   if(money==0)   {     printf("存款失敗/n");     return;   }   else   {     banks[nowaccount].balance+=money;     printf("存款成功/n");   } } void withdraw() {   if(load()!=1)     return;   char reducemoney[10];//取款金額   int money,i=0;   printf("請輸入取款金額/n");   scanf("%s",reducemoney);   while(reducemoney[i]!='/0')   {     if(reducemoney[i]<'0'||reducemoney[i]>'9')     {       printf("輸入格式錯誤！/n");       return;     }     i++;   }   while(reducemoney[i]!='/0')   {     if(i>9)     {       printf("金額超限/n");       return;     }     i++;   }   money=atoi(reducemoney);   if(money==0)   {     printf("取款失敗/n");     return;   }   else   {     if(money>banks[nowaccount].balance)       printf("您的賬戶沒有這么多余額,取款失敗!/n");     else     {       banks[nowaccount].balance-=money;       printf("取款成功/n");     }   } } void showAccount() {   if(load()!=1&&load()!=2)     return;   printf("您的賬戶信息如下：/n");   printf("賬號：%s/t余額：%d/n",banks[nowaccount].account,banks[nowaccount].balance); } void transferAccounts() {   if(load()!=1)     return;   char account1[20];   int i,judge=0,money,a;   char tramoney[10];   printf("請輸入您轉入的賬戶/n");   scanf("%s",account1);   for(i=0; i<accountnum; i++)   {     if(strcmp(account1,banks[i].account)==0)     {       a=i;       judge=1;       break;     }   }   if(judge!=1)    {      printf("沒有發現此賬戶/n");      return;    }   printf("請輸入轉賬金額/n");   scanf("%s",tramoney);   while(tramoney[i]!='/0')   {     if(tramoney[i]<'0'||tramoney[i]>'9')     {       printf("輸入格式錯誤！/n");       return;     }     i++;   }   while(tramoney[i]!='/0')   {     if(i>9)     {       printf("金額超限/n");       return;     }     i++;   }   money=atoi(tramoney);   if(money==0)   {     printf("轉賬失敗/n");     return;   }   else   {     if(money>banks[nowaccount].balance)       printf("您的賬戶沒有這么多余額,轉賬失敗!/n");     else     {       banks[nowaccount].balance-=money;       banks[a].balance+=money;       printf("轉賬成功/n");     }   }  } void reportLoss() {   if(load()!=1)     return;   banks[nowaccount].state=1;   printf("掛失成功/n"); } void cancelLoss() {   int judge=0;   if(load()==3)   {     printf("立即解掛請按1，退出請按0/n");     scanf("%d",&judge);     if(judge==1)     {       banks[nowaccount].state=0;       printf("解掛成功/n");     }    }   else if(load()==1)     printf("賬戶正常/n"); } void cancelAccount() {   int r;   r=load();   if(r==2)   {     printf("賬戶已經銷戶/n");     return;   }   else if(r==3||r==0)     return;   else if(r==1)   {     printf("請將您的賬戶余額取完/n");     banks[nowaccount].state=2;     banks[nowaccount].balance=0;     printf("注銷成功/n");   } } void updatePassword() {   char newpassword1[10]= {0},newpassword2[10]= {0};   int i=0,j=0,r;   char ch;   if(load()!=1)     return;   printf("請輸入新密碼/n");   while((ch=getch())!='/r')   {     newpassword1[i++]=ch;     putchar('*');   }   printf("/n");   printf("再次輸入密碼：/n");   while((ch=getch())!='/r')   {     newpassword2[j++]=ch;     putchar('*');   }   printf("/n");   r=strcmp(newpassword1,newpassword2);   printf("r:%d",r);   if(r!=0)   {      printf("兩次密碼不相同，改密失?。?n");     return;   }   i=0;   while(newpassword1[i]!='/0')   {     banks[nowaccount].password[i]=newpassword1[i];     i++;   }   printf("改密成功/n"); }