#include<stdio.h>
//#include<stdlib.h>
int pop();
void push(int num);
int array[10],counter = -1,n=10;
int main()
{
  int choice = 0;
  do
  {
    
    printf("\n\n********** MENU **********\n");
    printf("1. PUSH \n2. POP \n3. EXIT \nEnter Your choice:");
    scanf("%d",&choice);
    printf("\n\n");
    if(choice == 1)
    {
      int num = 0;
      printf("Enter the number to push :");
      scanf("%d",&num);
      push(num);
    }
    if(choice == 2)
    {  
      int num = pop();
      if(num != -1)
      printf("%d popped from stack \n",num);
    }
  }while(choice == 1 || choice == 2);
  
  
  return 0;
}
void push(int num)
{
  if(counter == n-1)
  {
    printf("Stack Overflow \n");
  }
  else
  {
    counter++;
    array[counter] = num;
    printf("%d pushed into stack\n",num);
  }
  
}
int pop()
{
  if(counter == -1)
  {
    printf("Stack empty \n");
    return -1;
  }
  else
  {
    counter--;
    return array[counter+1];
  }
}