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 buffer [MAX];
    int head = 0;
    for (int i = 0; i < n ; i++){
        char temp[5];
        int value;
        scanf("%s %d", temp, &value);
        if (strcmp(temp, "push")==0){
            if (head < MAX){
               buffer[head] = value; 
               head++;
            }else {
                printf("Stack Overflow\n");
            }
        }else {
            if (head > 0) {
                printf ("%d\n",buffer[--head]);
            }
            else {
                printf("Stack Underflow\n");
            }
        }
    }
    


}

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

    process_stack(n);
    return 0;
}

Solving Approach