Help on quiting the program without illegel operation

I am writing a serial port program, how am i going to stop the program when i can't find the serial port and exit the program without illegal operations..... THAnks!

Sample of the program:

if(!GetCommState(hComm, &dcbCPort))
{cout<<"Error getting com state!"<<endl;
Application->Terminate();
CloseHandle(hComm);
Abort;
;
}
else
cout<<"Port ready to use!"<<endl;

Just remebered, is it ok to use the abort method or is there some other ways to stop the program from process the rest of the codes....???

Post the entire code...
If you use return; or return 0; it should quit without errors. (Assuming you're in the main() function)

Whaoo...
Thats cool!
What a simple code, hehe
Yup i'm cured Thanks Dual-fish ( two mind fish )?? Thats clever, thanks for the help!!!