pop up

how do i create a pop up? say for example a pop up saying "access denied"

I don't think you can do that in console programs (I may Be Wrong).
In win API ypu'd use some thing like MessageBox();
Try posting in Windows forum.

If you're using windows then it's relatively simple:

Code:

---

#define WIN32_LEAN_AND_MEAN //keep out unecessary includes
#include <windows.h>

int main()
{
  MessageBox(NULL,"Access is denied","Error",MB_OK);
}

---

You might also want to see the corresponding msdn page

type javascript:alert("Boo!"); into your address bar and hit enter.