Implement Stack Using Array with Push and Pop Operations

Code

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

#define MAX 10

typedef struct {
    int arr[MAX];
    int top;
    int capacity;
} Stack;

void push(Stack *s, int x) {
    if (s->top == s->capacity-1) {
        printf("Stack Overflow\n");
        return;
    }
    s->arr[++s->top] = x;
}

void pop(Stack *s) {
    if (s->top == -1) {
        printf("Stack Underflow\n");
        return;
    }
    printf("%d\n",s->arr[s->top--]);
}

void process_stack(int n) {
    // Your logic here
    Stack s = {.top = -1, .capacity = MAX};
    for (int i = 0; i < n; i++) {
        char op[4];
        scanf("%s", op);
        if (strcmp(op, "push") == 0) {
            int x;
            scanf("%d", &x);
            push(&s, x);
        } else {
            pop(&s);
        }
    }
}

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

    process_stack(n);
    return 0;
}

Solving Approach