Implement Stack Using Array with Push and Pop Operations

Code

#include <stdio.h>
#include <stdint.h>
#include <string.h>

#define MAX 10

void process_stack(int n) {
    // Your logic here
    int arr[MAX] = {0};
    char op[MAX] = {0};
    int x;
    int c = 0;

    for (int i=0; i<n; i++) {
        scanf("%s %d", &op, &x);

        if (strcmp(op, "push") == 0) {
            if (c >= MAX) {
                printf("Stack Overflow\n");
            } else {
                arr[c++] = x;
            }
        } else if (strcmp(op, "pop") == 0) {
            if (c <= 0) {
                printf("Stack Underflow\n");
            } else {
                printf("%d\n", arr[--c]);
            }
        }
    }
}

int main() {
    int n;
    scanf("%d", &n);
    getchar(); // Consume newline after number

    process_stack(n);
    return 0;
}

Solving Approach