A C++ PROGRAM TO FIND WHEHTHER THE GIVEN NUMBER IS PRIME OR NOT

void main()
{
 clrscr();
 int num,i,c;
 cout<<"PROGRAM TO FIND THE PRIME NUMBER";
 cout<<"\nENTER THE NUMBER : ";
 cin>>num;
 if(num==1)
 {
  cout<<"THE GIVEN NUMBER IS A PRIME NUMBER";
 }

 for(i=2;i<=num-1;i++)
 {
  if(num%i == 0)
  {
   cout<<"THE GIVEN NUMBER IS NOT A PRIME NUMBER";
   break;
  }
 }
  if(i==num)
  {
   cout<<"THE GIVEN NUMBER IS A PRIME NUMBER";
  }
 getch();
}