C Program to find a given number is prime(or)composite.

//Program to find a given number is prime(or)composite.
#include<stdio.h>
int main()
{
    int a,i,count=0;
    printf("\n enter a positive number:");
    scanf("%d",&a);
    for(i=1;i<=a;i++)
    {
        if(a%i==0)
          count++;
    }
    if(count==1)
          printf("\n 1 is neither Prime nor Composite \n");
    else if(count==2)
          printf("\n It is a prime number \n");
    else if(count>2)
          printf("\n It is a composite number \n");
return 0;
}