Prime or not program in c

#include<stdio.h>

void main()
{

int i,n,count=0;

printf("Enter a number");
scanf("%d",&n);

for(i=1;i<=n;i++)
   if(n%i==0)
          count++;

if(count==2)

printf("prime");

else

printf(" not prime");

}

OUTPUT

Enter a number 3
prime