Prime number program

NOTE :
              
// indicates comments.This wont get printed in the output.This is used for for documentation purpose.

PROGRAM:

#include<stdio.h>
#include<conio.h>
void main()
{
 int num,i, p=0;       //p is no. of prime divisors
 clrscr();
 printf("Enter any number\t :\t");
 scanf("%d",&num);
 for(i=2;i<=num/2;i++)
 {
  if(num%i==0)
   {
     ++p;
     break;
   }
 }
 if(p==0)
 {
   printf("%d is a PRIME NUMBER\n",num);
 }
 else
 {
   printf("%d is not a PRIME NUMBER",num);
 }
 getch();
}

OUTPUT :