Print Sum of Even Numbers

Code

#include <stdio.h>

int sum = 0;

int sum_even_numbers(int *ptr, int n) {
  int sum = 0;
  for (int i = 0 ; i < n; i++)  
  {
    if (ptr[i] % 2 == 0)
    {
        sum += ptr[i];
    }
  }
  return sum;
  
}

int main() {
    int n;
    scanf("%d", &n);

    int arr[100];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    int result = sum_even_numbers(arr, n);

    printf("Sum = %d", result);

    return 0;
}

Solving Approach