#include<iostream.h>
	#include<conio.h>
	#include<process.h>
	const MAX=50;int a[MAX]={0};int top;
		void push(int o)
		{
			if(top>=MAX){cout<<"overflow";return;}
			a[top]=o;top++;
		}
		int pop()
		{
			if(top<=0){cout<<"Underflow";return 0;}
			top--;return a[top];
		}
	void main()
	{
		clrscr();
		do{
			cout<<"\nEnter choice:\n1.INSERT\n2.REMOVE\n3.QUIT\n";
			int c;cin>>c;int x;
			switch(c)
			{
			      case 1:
				cout<<"Enter value:";cin>>x;
				push(x);
				break;
			      case 2:
				cout<<"Value from Queue:";
				cout<<pop();
				break;
			      case 3:
				exit(0);
			}
		}while(1);
		getch();
	}