#include <conio.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
void yonghudlscreen();
void zhucescreen();
void zhanghuye();
void cunkuan();
void qukuan();
void zhanghucr();
void zhanghuxg();
void zhanghusc();
void gerendlscreen();
void mainscreen();
void saverecords();
int load();
struct person
	{
		char number[50],password[50],name[50],num[50];
	}p1;
int main()
{
	mainscreen();
	return 0;
}
void mainscreen()
{
	int x;
	while(1)
	{
		printf("**********  银行账户管理系统   **********\n");
		printf("\n\n\n");
		printf("**********     1.用户登录     **********\n");
		printf("**********     2.用户注册     **********\n");
		printf("**********     0.返回系统     **********\n");
	    printf("\n\n\n");
	    printf("请输入操作（0-2）；");
	    scanf("%d",&x);
	    if(x==0)
	    break;
	    switch(x)
	    {
	    	case 1:yonghudlscreen();break;
	    	case 2:zhucescreen();break;
		}
	}
	return;
}
	void zhucescreen()                                                 //用户注册界面
{
	FILE *fp;
	int flag=1,x;
	load();
	while(flag==1){
	if((fp=fopen("用户信息.txt","a"))==NULL)
	{
		printf("文件打开错误!\n");
		exit (0);
	}
	printf("请输入银行账户:\n");
	scanf("\n%s",p1.number);
	fprintf(fp,"\n%s ",p1.number);
	printf("请输入密码:\n");
	scanf(" %s",p1.password);
	fprintf(fp,"%s ",p1.password);
	printf("请输入姓名:\n");
	scanf(" %s",p1.name);
	fprintf(fp,"%s ",p1.name);
	printf("请输入身份证号:\n");
	scanf(" %s",p1.num);
	fprintf(fp,"%s 0",p1.num);
	if(fclose(fp))
	{
		printf("文件无法关闭!\n");
		exit (0);
	}
	printf("注册成功!\n");
	printf("按1再次注册，按0退出\n\n");
	printf("下步操作:  ");
	scanf("%d",&flag);
	}
	return ;
}
void yonghudlscreen()
{
	FILE *fp;
	int flag=1,x;
	load();
	while(flag==1){
	if((fp=fopen("用户信息.txt","rb"))==NULL)
	{
		printf("文件打开错误!\n");
		exit (0);
	}
	char mima[32];
	printf("请输入银行账户:\n");
	scanf("%s",p1.number);
	printf("请输入密码:\n");
	scanf("%s",mima);
	if(strcmp(mima,p1.password)==0)
	{
		printf("登录成功\n");
		gerendlscreen();
	}
	else
	{
		printf("密码错误\n");
		system("pause");
	}
	if(fclose(fp))
	{
		printf("文件无法关闭!\n");
		exit (0);
	}
}
	return;
}

void gerendlscreen()
{
 	int x;
	while(1)
	{
		printf("**********       功能     **********\n");
		printf("\n\n\n");
		printf("**********     1.查询账户余额     **********\n");
		printf("**********     2.存款             **********\n");
		printf("**********     3.取款             **********\n");
		printf("**********     4.账户插入         **********\n");
		printf("**********     5.账户修改         **********\n");
		printf("**********     6.账户删除         **********\n");
		printf("**********     0.返回系统         **********\n");
	    printf("\n\n\n");
	    printf("请输入操作（0-6）；");
	    scanf("%d",&x);
	    switch(x)
	    {
	    	case 0:mainscreen();break;
			case 1:zhanghuye();break;
	    	case 2:cunkuan();break;
	    	case 3:qukuan();break;
	    	case 4:zhanghucr();break;
	    	case 5:zhanghuxg();break;
	    	case 6:zhanghusc();break;
		}
	}
    return;
}
void zhanghuye()
{
		FILE *fp;
		struct zhanghu
		{
			int ye;
		}Zh;
	int flag=1,x;
	load();
	while(flag==1){
	if((fp=fopen("用户信息.txt","rb"))==NULL)
	{
		printf("文件打开错误!\n");
		exit (0);
	}

	fscanf(fp,"%d",&Zh.ye);
	printf("%d\n",Zh.ye);
	if(fclose(fp))
	{
		printf("文件无法关闭!\n");
		exit (0);
	}
	gerendlscreen();
	return ;
 }
}
void cunkuan()
{
		FILE *fp;
		struct zhanghu
		{
			int ye;
		}Zh;
	int flag=1,a,n;
	load();
	while(flag==1){
	if((fp=fopen("用户信息.txt","wb"))==NULL)
	{
		printf("文件打开错误!\n");
		exit (0);
	}
        printf("请输入存款金额：");
		scanf("%d",&a);
		fscanf(fp,"%d",&Zh.ye);
        Zh.ye=Zh.ye+a;
	fprintf(fp,"%d",Zh.ye);
	printf("%d\n",Zh.ye);
	if(fclose(fp))
	{
		printf("文件无法关闭!\n");
		exit (0);
	}
	gerendlscreen();
	return ;
 }
}
void qukuan()
{
		FILE *fp;
		struct zhanghu
		{
			int ye;
		}Zh;
	int flag=1,a;
	load();
	while(flag==1){
	if((fp=fopen("用户信息.txt","wb"))==NULL)
	{
		printf("文件打开错误!\n");
		exit (0);
	}
		scanf("%d",&a);
		fscanf(fp,"%d",&Zh.ye);
		if(a>Zh.ye)
		printf("账户余额不足\n");
        else{
		 Zh.ye=Zh.ye-a;
	fprintf(fp,"%d",Zh.ye);
	}
	if(fclose(fp))
	{
		printf("文件无法关闭!\n");
		exit (0);
	}
	gerendlscreen();
	return ;
 }
}
void zhanghucr()
{
	 FILE *fp;
	int flag=1,x;
	load();
	while(flag==1){
	if((fp=fopen("用户信息.txt","rb"))==NULL)
	{
		printf("文件打开错误!\n");
		exit (0);
	}
	char mima[32];
	printf("插入新的账户\n");
	printf("请输入银行账户:\n");
	scanf("%s",p1.number);
	printf("请输入密码:\n");
	scanf("%s",mima);
	if(strcmp(mima,p1.password)==0)
	{
		printf("登录成功\n");
		gerendlscreen();
	}
	else
	{
		printf("密码错误\n");
		system("pause");
	}
	if(fclose(fp))
	{
		printf("文件无法关闭!\n");
		exit (0);
	}
	gerendlscreen();
   return;
}
}
void zhanghuxg()
{
	 FILE *fp;
	int flag=1,x;
	load();
	while(flag==1)
	{
	if((fp=fopen("用户信息.txt","wb"))==NULL)
	{
		printf("文件打开错误!\n");
		exit (0);
	}
	printf("请输入银行账户:\n");
	scanf("\n%s",p1.number);
	printf("请输入新密码:\n");
	scanf(" %s",p1.password);
	fprintf(fp,"%s ",p1.password);
	if(fclose(fp))
	{
		printf("文件无法关闭!\n");
		exit (0);
	}
	printf("修改成功!\n");
	printf("按1继续修改，按0退出\n\n");
	printf("下步操作:  ");
	scanf("%d",&flag);
	}
	gerendlscreen();
	return;
}
void zhanghusc()
{
	int i,j,n;
	char number[50];
int k=-1;
FILE *fp;
n=load();
printf("\n\n输入要删除的账户:");
scanf("%s",&number);
if((fp=fopen("用户信息.txt","w"))==NULL)
 {
printf("\n\n打开文件失败\n\n");
}
for(j=0;j<n;j++)
if(strcmp(p1.number,number)==1)
{
    k=0;
break;
}
if(k==-1)
{
    printf("该账户不存在！\n");
}
for(i=0;i<n;i++) if(i!=j)
/********删除选项,并自动调整其他所有选项*************/
fprintf(fp,"%s %s %s %s\n",p1.number,p1.password,p1.name,p1.num);
fclose(fp);


return;
}
int load()//**********加载函数**********/
/***********加载所有记录,并且可以返回所有记录的个数********/
{
	FILE *fp;
	int i;
	if((fp=fopen("用户信息.txt","r"))==NULL)
	{
	printf("\n打开文件失败！\n");
	return 0;
	}
	for(i=0;!feof(fp);i++)
	fscanf(fp,"%s%s%s%s",&p1.number,&p1.password,&p1.name,&p1.num);
	fclose(fp);
	 return(i);
}