//Sz CmdLine Contains Command line arguments without the exe name(Command with arguments specified using)
//Start -> run option or from the DOS prompt
//iCmdShow contains numbers that indicates whether window is to be shown in maximized,minimized or in restored form.
//its value can be SW_MAXIMIZE,SW_MINIMIZE ot SW_RESTORE defined in winuser.h
{
MessageBox(NULL,"Helloworld","My first program",MB_ICONINFORMATION!MB_OK);
//(handle to owner window,text in message box,message bo title,message box style i.e. icons and buttons)
// is binary or operator return ;
}