#include<iostream>
#include<stdlib.h>
#define stack_size 5
using namespace std;
class stack
{
    private:
    int i,s[10],top;
    public:
    int item;
    stack()
    {
         top=-1;
    }
    void push()
    {
    if(top==stack_size-1)
    {
        cout<<"stack full \n";
        return;
    }
    else
        cout<<"Enter the data to be entered in stack= ";
        cin>>item;
        s[++top]=item;
    }
    void pop()
    {
        if(top==-1)
            cout<<"stack empty \n";
        else
            cout<<"The popped out element from stack top= "<<s[top]<<endl;
            top--;
    }
    void display()
    {
    if(top==-1)
        cout<<"empty \n";
    else
    {
        cout<<"The contents of stack are"<<endl;
        for(i=0;i<=top;i++)
        cout<<s[i]<< endl;
    }
    }
};
int main()
{
int choice;
stack ob;
for(;;)
{
cout<<"1:push\n2:pop\n3:display \n4:exit"<<endl;
cout<<"Enter choice";
cin>>choice;
switch(choice)
{
case 1: ob.push();
break;
case 2: ob.pop();
break;
case 3: ob.display();
break;
default:exit(0);
}
}
return 0;
}