#include <iostream>
#define SIZE 5
using namespace std;
class STACK {
private:
int num[SIZE];
int top;
public:
STACK(); // Default constructor
int push(int);
int pop();
int isEmpty();
int isFull();
void displayItems();
};
// Constructor definition
STACK::STACK() {
top = -1;
}
// Check if stack is empty
int STACK::isEmpty() {
return (top == -1);
}
// Check if stack is full
int STACK::isFull() {
return (top == (SIZE - 1));
}
// Push operation
int STACK::push(int n) {
if (isFull()) {
return -1; // Indicate stack is full
}
num[++top] = n;
return n;
}
// Pop operation
int STACK::pop() {
if (isEmpty()) {
return -1; // Indicate stack is empty
}
return num[top--];
}
// Display stack contents
