#include <stdio.h>
#define MAX 100
int main() {
    push(10);
    push(20);
    push(30);
    display();
    peek();
    pop();
    display();
    return 0;
}


int stack[MAX];
int top = -1;

void push(int value) {
    if (top >= MAX - 1) {
        printf("Stack Overflow\n");
    } else {
        stack[++top] = value;
        printf("%d pushed to stack\n", value);
    }
}

// Pop operation
void pop() {
    if (top < 0) {
        printf("Stack Underflow\n");
    } else {
        printf("%d popped from stack\n", stack[top--]);
    }
}

// Peek operation
void peek() {
    if (top < 0) {
        printf("Stack is empty\n");
    } else {
        printf("Top ele is %d\n", stack[top]);
    }
}

// Check if stack is empty
int isEmpty() {
    return top == -1;
}

// Display stack
void display() {
    if (top < 0) {
        printf("Stack is empty\n");
    } else {
        printf("Stack elements: ");
        for (int i = 0; i <= top; i++) {
            printf("%d ", stack[i]);
        }
        printf("\n");
    }
}