AW: Embarassing newbie question

[Stebich Frank]

> -----Ursprüngliche Nachricht-----
> Von:	Albert Wagner [SMTP:alwagner at tcac.net]
> Gesendet am:	Mittwoch, 4. August 1999 06:13
> An:	KDevelop
> Betreff:	Embarassing newbie question
> 
> Sorry, did c++ too long ago. Don't understand notation conventions.
> What does the "&" mean in the first and second instance below?
> What about the "p"?
> 
> QPoint& operator+= ( const QPoint & p )
> 
	[Stebich Frank]  
	This construct is called a reference. A reference is
	another name for a memory object. An example:

	 1: void inc( int &i)
	 2: {
	 3:   i++;
	 4: }
	 5:
	 6: void main()
	 7: {
	 8:   int a = 5;
	 9:   inc( a);
	10: }

	The function called in line 9 changes the variable a.


Frank Stebich
Siemens AG, ICN WN AN E22
Brandteichstr. 25, 17489 Greifswald

Tel.: +49 3834 555-736, Fax: +49 3834 555-693, E-Mail:
frank.stebich at icn.siemens.de