import java.util.*;
class TestDoWhile04Ex 
{
	public static void main(String[] args) 
	{
		//**����3��ATMȡ��**
		/*
		��������balance����ʼ��Ϊ0�����Ա�ʾ�����˻���������ͨ��ATM������ʵ�ִ�ȡ��ȹ��ܡ�

		=========ATM========
		   1�����
		   2��ȡ��
		   3����ʾ���
		   4���˳�
		��ѡ��(1-4)��
		*/
		double money = 1000.0;

		Scanner sc = new Scanner(System.in);
		int s = 1;

		while (s != 4){
			System.out.println("=========ATM========");
			System.out.println("1�����");
			System.out.println("2��ȡ��");
			System.out.println("3����ʾ���");
			System.out.println("4���˳�");

			System.out.println("��ѡ��(1-4)��");

			s = sc.nextInt();

			switch (s){
				case 1:
					System.out.println("����������");
					double m1 = sc.nextDouble();
					money +=m1;
					System.out.println("���:"+m1);
				break;

				case 2:
					System.out.println("������ȡ����");
					double m2 = sc.nextDouble();
					money -=m2;
					System.out.println("ȡ��"+m2);
				break;

				case 3:
					System.out.println("��"+money);
				break;
			
			}
		}
		System.out.println("�˳���"+money);
		
	}
}