An object oriented implementation of stack using arrays in C++.

Stack_ArrayImplementation_OOP.cpp

// Stack - Object oriented implementation using arrays
#include <iostream>
using namespace std;
#define MAX_SIZE 101 

class Stack
{
private:
  int A[MAX_SIZE];  // array to store the stack
	int top;   // variable to mark the top index of stack. 
public:
	// constructor
	Stack()
	{
		top = -1; // for empty array, set top = -1
	}

	// Push operation to insert an element on top of stack. 
	void Push(int x) 
	{
	  if(top == MAX_SIZE -1) { // overflow case. 
			printf("Error: stack overflow\n");
			return;
		}
		A[++top] = x;
	}
 
	// Pop operation to remove an element from top of stack.
	void Pop() 
	{
		if(top == -1) { // If stack is empty, pop should throw error. 
			printf("Error: No element to pop\n");
			return;
		}
		top--;
	}
 
	// Top operation to return element at top of stack. 
	int Top() 
	{
		return A[top];
	}
 
	// This function will return 1 (true) if stack is empty, 0 (false) otherwise
	int IsEmpty()
	{
		if(top == -1) return 1;
		return 0;
	}

	// ONLY FOR TESTING - NOT A VALID OPERATION WITH STACK 
	// This function is just to test the implementation of stack. 
	// This will print all the elements in the stack at any stage. 
	void Print() {
		int i;
		printf("Stack: ");
		for(i = 0;i<=top;i++)
			printf("%d ",A[i]);
		printf("\n");
	}
};

int main()
{
    // Code to test the implementation. 
    // calling Print() after each push or pop to see the state of stack. 
	Stack S;
	S.Push(2);S.Print();
	S.Push(5);S.Print();
	S.Push(10);S.Print();
	S.Pop();S.Print();
	S.Push(12);S.Print();
}

stdio needs to be included.

actually iostream is enough in cpp language

stdio needs to be included.

actually iostream is enough in cpp language

he said that because printf is used in code instead of cout.