#include<stdio.h>
#include<stdlib.h>
#define SIZE 5
int stack[SIZE],top,i;
void push()
{
    int stack[SIZE],top,x;
    if(top==SIZE-1)
    {
        printf("Stack overflow\n");
    }
    else{
        scanf("%d", &x);
        top++;
        stack[top]=x;
    }
}
void peek()
{
    if(top==-1)
    {
        printf("Stack is empty\n");
    }
    else{
        printf("%d\n",stack[top]);
    }
}
void display()
{
    if(top==-1)
    {
        printf("Stack is empty\n");
    }
    else{
        ptintf("Stack is empty\n");
    }
}
int main()
{
    push(10);
    push;
    peek();
    push(30);
    peek();
    return 0;
}