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) {
    int stack[MAX];
    int top=-1;
    int x;
    char op[10];
    
   for (int i=0;i<n;i++){
        scanf("%s", op);
        if (op[1] == 'u') {
            scanf("%d", &x);

            if (top < MAX-1){
                top++;
                stack[top] = x;
                
            } else {printf("Stack Overflow\n");}
                  
        }

         if (op[1] == 'o') {
            if (top > -1) {
                printf("%d\n",stack[top]);
                top--;
            } else { 
                printf("Stack Underflow\n");
            }
            
        }
        
    } 
    }

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

    process_stack(n);
    return 0;
}

Solving Approach