Realization Stack with Using Array

gistfile1.cpp

#include <stdio.h>

bool push(int data);
int  pop();
bool isFull();
bool isEmpty();
void PrintStack();

#define STACK_SIZE				4
#define STACK_EMPTY_POSITION	-1

int Stack[STACK_SIZE];
int top = STACK_EMPTY_POSITION;

void main()
{
	push(1),push(2),push(3),push(4);
	PrintStack();

	pop(),pop();
	PrintStack();

}

bool push(int data)
{
	if(isFull()) 
	{
		printf("Stack is Full \n");
		return false;
	}

	Stack[++top]	=	data;
	return true;
}

int pop()
{
	if(isEmpty()) 
	{
		printf("Stack is Empty \n");
		return false;
	}

	int ret_val  = Stack[top];
	Stack[top--] = 0;

	return ret_val;
}

bool isFull()
{
	return (top+1) == STACK_SIZE ? true : false;
}

bool isEmpty()
{
	return top == STACK_EMPTY_POSITION ? true : false;
}

void PrintStack()
{
	for(int i = top ; i >= 0 ; --i)
		printf("%2d", Stack[i]);

	printf("\n");
}