Input Number and Give Number is Prime or Not Prime Number.

 #include<stdio.h>
main()
{
   int i,n,t=0;
   printf("\nEnter Number : ");
   scanf("%d",&n);
   for(i=1;i<=n;++i)
   {
     if(n%i==0)
       ++t;
   }
   if(t==2)
      printf(" %d no is Prime", n);
   else
      printf(" %d no is Not Prime", n);
}

       Output