/**
 * @(#)Stack.java
 *
 *
 * @author :Abhilash Joseph C
 * @version 1.00 2009/8/31
 */

import java.io.DataInputStream;
class MyStack
{
	int Top=-1;
	public static int MAX=2;
	int Item[]=new int[MAX];
	
	void Push(int X)
		
	{
		if(Top==MAX-1)
			System.out.println("Stack is full !");
		else{
			Top++;
			Item[Top]=X;
			
		}
	}
	int Pop()
	{
		if(Top==-1)
			return -1;
		else{
			return (Item[Top--]);
			
			}
	}
	void Display()
	{
		if(Top==-1)
			System.out.println("Stsck is Empty");
		else{
		
		for (int i=0;i<=Top;i++)
			System.out.print("\t"+Item[i]);
		}
		System.out.println("");
	}
}

class Stack
{
	public static void main (String[] args) {
		
		MyStack obj =new MyStack();
		int opt=1;
		int Num;
		
		while(opt !=4)
		{
			System.out.println("========MENU==========");
			System.out.println(" |1----->Push()   |");
			System.out.println(" |2----->Pop()	  |");
			System.out.println(" |3----->Display()|");
			System.out.println(" |4----->Exit()	  |");
			System.out.println("======================");
			System.out.println("Enter the option	:");
			try{
				DataInputStream in = new DataInputStream(System.in);
				opt=Integer.parseInt(in.readLine());
				switch(opt)
				{
					case 1:
						System.out.println("Enter the no		:");
						Num=Integer.parseInt(in.readLine());
						obj.Push(Num);
						break;
					case 2:
						Num=obj.Pop();
						if(Num==-1)
							System.out.println("Stack is Empty !")	;
						else
							System.out.println("The poped item is :"+Num);
							
						break;
					case 3:
						obj.Display();
						break;
					case 4:
						break;
					default :
						System.out.println("In valued Input !");
				}
			}
			catch(Exception e){}
		}
		
	}
}