First-Github-Project/stack.cpp at main · PalakSaraswat/First-Github-Project · GitHub

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#include<iostream>
using namespace std;

#define MAX 100


class Stack{
    int arr[MAX];
    int top;

  public:
  Stack () : top (-1) {} //constructor to initialize the top

void push(int element)
{

         if(top >= (MAX-1))
        {
            cout << "Push operationis is not possible\n";
        }
        else {
         arr[++top] = element;
        }
}

void pop()
{
    if(arr[top]==-1)
    {
        cout << "We cann't do pop operation\n";
    }
    else
    {
    arr[top--];
    }
}

  void display()
  {
      cout << "Elements in Stacks are : \n";
      for(int i = top; i >= 0; i--)
      {
          cout << arr[i] << endl;
      }
  }
};


int main()
{

    Stack s;

    s.push(1);
    s.push(2);
    s.push(3);
    s.push(4);
    s.display();

    s.pop();
    s.pop();
    s.display();
}