#include <stdio.h>

int MAXSIZE = int pop() {
    int data;

    if (!isempty()) {
        data = stack [top];
        top = top -1;
        return data;
        } else {
            printf("could not retrieve data, Stack is empty.\n");
            }
        }
int push(int data){

    if(!isfull()){
        top = top + 1;
        stack[top] = data;
    } else {
        printf("Could not insert data, stack is full.\n");
    }
}
8;
int stack[8];
int top = -1;

int isempty() {

    if(top == -1)
        return 1;
    else
        return 0;
}

int isfull() {

    if (top == MAXSIZE)
        return 1;
    else
        return 0;
}

int peek() {
    return stack[top];
}

int pop() {
    int data;

    if (!isempty()) {
        data = stack [top];
        top = top -1;
        return data;
        } else {
            printf("could not retrieve data, Stack is empty.\n");
            }
        }
int push(int data){

    if(!isfull()){
        top = top + 1;
        stack[top] = data;
    } else {
        printf("Could not insert data, stack is full.\n");
    }
}