Implement Stack Using Array with Push and Pop Operations

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

#define MAX 10

void process_stack(int n) {
    // Your logic here
    static int stack[MAX] = {};
    static int stackElemPtr = -1;

    char buff[10];
    int val=0;

    for (int i=0;i<n;++i)
    {
        scanf("%s",buff);

        if (0 == strcmp("push",buff))
        {
            scanf("%d",&val);
            if (stackElemPtr < MAX-1)
            {
                stackElemPtr++;
                stack[stackElemPtr] = val;
            }
            else
            {
                printf("Stack Overflow\n");
            }
        }else if (0 == strcmp("pop",buff))
        {
            if (stackElemPtr > -1)
            {
                printf("%d\n", stack[stackElemPtr]);
                stackElemPtr--;
            }
            else
            {
                printf("Stack Underflow\n");
            }
        }
    }
}

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

    process_stack(n);
    return 0;
}