From:	Andrej Aderhold <im-a AT earthling DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	can't get abstract virtual function to work
Date:	Sun, 28 Mar 1999 14:39:45 +0200
Organization:	Online-Kiosk GmbH & Alphacom GmbH
Message-ID:	<36FE2311.287E8DF4@earthling.net>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

hallo Everyone,
following example produces a Compile time error in DJGPP:
The Compiler complains about the definit. of the pure virtual function
fn1 in class C0 as following:

ERROR: Cannot allocate an Object of type 'C0'
ERROR: since the following virtual functions are abstract:
ERROR: void C0::fn1()

//-----------------------
class C0
{
   public:
        virtual void fn1(void) = 0;
};

class C1
{
    public:
      virtual void fn1(){return 1}
}

main()
{
   C0 *c0 = new C1;
   c0->fn1();
}

Why does DJGPP dont like my Class to have a abstract virtual function ?
Thanks for any help

Andrej Aderhold
Bayreuth, Germany

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