Whether a number is a prime number or not using function

#include<stdio.h>
void checkNum(n)
{
    int i, count=0;
    for(i=2; i<n; i++)
    {
        if(n%i==0)
        {
            count++;
            break;
        }
    }
    if(count==0)

    {
        printf("%d is prime number.\n", n);
    }

    else

    {
        printf("%d is not prime number.\n", n);
    }

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