#include <iostream>
#include <stdio.h>
#define size 10
using namespace std;
int data[size];
int top;

void push(int item){
    data[top]=item;
    top++;
}

int pop(){
    top--;
    return data[top];
}
int peak(){
    int peakvalue;
    top--;
    peakvalue = data[top];
    top++;
    return peakvalue;
}

int isempty(){
    if (top==0){
    return 1;
    }
    else
    {
    return 0;
    }
}
int main()
{
    int choice;
    printf("1-for push\n");
    printf("2-for pop\n");
    printf("3-for peak\n");
    printf("4-for check empty or not\n");
    while(1){
    printf("please make your selection\n");
    scanf("%d",&choice);
        if(choice==1){
           int item;
           printf("enter the item to be pushed?\n");
           scanf("%d",&item);
           push(item);
        }
        else if(choice==2){
            int poped;
            poped= pop();
            printf("%d\n",poped);
        }
        else if(choice==3){
            int peaked;
            peaked = peak();
            printf("%d\n",peaked);
        }
        else if(choice==4){
            int poped;
            poped= isempty();
            printf("%d\n",poped);
        }

    }

}