I just need explanation for the following codes. Please comment in detail. int primeno(int, int); int main() { int num, check; printf("Enter a number: "); scanf("%d", &num); check = primeno(num, num / 2); if (check == 1) { printf("%d is a prime number ", num); } else { printf("%d is not a prime number ", num); } return 0; } int primeno(int num, int i) { if (i == 1) { return 1; } else { if (num % i == 0) { return 0; } else { return primeno(num, i - 1); } } }