Solution: Is the Number Prime

#include <stdio.h>
int isPrime(int n)
{
  if (n <= 1) return 0;
  
  int i;
  for (i = 2; (i * i) <= n; i++) 
  {
    if (n % i == 0) return 0;
  }
  return 1;
}
int main(void)
{
    int n = 10;
    printf("%d\n", isPrime(n));
    return 0;
}