banksystem.cpp

模拟银行系统的程序

#include<iostream>

using namespace std;

void end(int n)
{
	cout<<"对不起，您必须与银行联系！"<<endl;
}
void main()
{
	int forever=1;
	float money=1;
	int password=3333;
	
	do
	{
		cout<<"欢迎您！\n"<<"请输入您的密码：\n";
		cout<<"(如果您是第一次来的话，你的密码将为：3333)";

		int a;
		cin>>a;
        if(a!=password)
		{
			cout<<"密码错，请重新输入：\n";
		    cin>>a;

			if(a!=password)
			{
				cout<<"密码错，请重新输入：\n";
		        cin>>a;

			    if(a!=password)
				{
					end(1);
				}
			}
		}
		int jixu=1;
		do
		{
			int choice;
			cout<<"请选择您所需要的服务：\n";
			cout<<"1.查询余额.\n";
            cout<<"2.取款.\n";
            cout<<"3.存款.\n";
            cout<<"4.修改密码.\n";
            cout<<"5.退出.\n";

			cin>>choice;
            switch(choice)
			{
			case 1:
				cout<<"您的余额为："<<money<<"元\n";
					break;
			case 2:
				cout<<"请输入您所要取的金额：\n";
				float moneys;
				cin>>moneys;
				if(moneys>money)
					cout<<"对不起，您的存款不足！\n";
				else
				{
					money=money-moneys;
					cout<<"正在工作，请稍等……"<<"\n"<<"谢谢，您的服务已完成！\n";
				}
				break;
			case 3:
				cout<<"请输入您要存入的金额：";
				float money2;
				cin>>money2;
				money+=money2;
				cout<<"\n谢谢，您的服务已完成！\n";
				break;
			case 4:
				cout<<"请输入新密码：";
				int password1;
				cin>>password1;
				cout<<"\n请再输入密码确认：";
				int password2;
				cin>>password2;
				if(password2==password1)
				{
                       cout<<"\n谢谢，您的密码已修改！";
					   password=password2;
				}
				else    cout<<"\n密码不对，修改错误！\n";
                break;
			case 5:
				jixu=2;
				break;
			default:
				cout<<"您没有作出选择！\n";
                break;
			};
			cout<<"请选择：\n"<<"1.继续.  2.退出.\n";
			int choices;
			cin>>choices;
			switch(choices)
			{
			case 1:
				break;
			case 2:
				jixu=2;
				break;
			default:
				cout<<"您没有作出选择！\n";
                break;
			}
		}while(jixu==1);
    cout<<"再见，欢迎再来！\n";
	cout<<"***********************\n";
	cout<<"***********************\n";
	}
	while(forever=1);
}