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
    char s[MAX][4];
    int len = 0;
    for (int i = 0; i < n; i++){
        char op[10];
        fgets(op, sizeof(op), stdin);
        if (!strncmp(op, "push", 4)){
            if (len < MAX){
                strcpy(s[len], (op+5));
                len++;
            }
            else{
                printf("Stack Overflow\n");
            }
        }
        if (!strncmp(op, "pop", 3)){
            if (len != 0){
                len--;
                printf("%s", s[len]);
            }
            else{
                printf("Stack Underflow\n");
            }
        }
    }
}

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

    process_stack(n);
    return 0;
}