StackOperation.c

#include <stdio.h>
#define MAX 5

int stack[MAX], top = -1;

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

void pop() {
    if (top == -1)
        printf("Stack Underflow\n");
    else
        printf("Popped: %d\n", stack[top--]);
}

void display() {
    if (top == -1)
        printf("Stack is empty\n");
    else {
        printf("Stack: ");
        for (int i = 0; i <= top; i++)
            printf("%d ", stack[i]);
        printf("\n");
    }
}

int main() {
    int choice, value;

    while (1) {
        printf("1. Push  2. Pop  3. Display  4. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        if (choice == 1) {
            printf("Enter value : ");
            scanf("%d", &value);
            push(value);
        } else if (choice == 2) {
            pop();
        } else if (choice == 3) {
            display();
        } else {
            break;
        }
    }

    return 0;
}