(Borland?) C++ Language Question

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1 total messages Started by J.C. Ashworth Thu, 28 Jan 1993 17:18

#2410

Author: J.C. Ashworth
Date: Thu, 28 Jan 1993 17:18

47 lines
1608 bytes

I dunno whether this relates solely to the Borland C++ compiler or whether
it's a general C++ feature / bug?

I seem to be able to do the following quite legally and with the expected
result:

class B
{
// ...
};

class C
{
// ...
};

class D : public B
{
	int xtraField;
// ...
};

B& foo( ... );

D::func( ... )
{
	D& temp = (D&) foo( ... );
	temp.xtraField = 5;
}

Is this OK? How does the cast from B& to D& work? I suppose a cast from B& to C&
would NOT be legal?

thanks.
	
-- 
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          /             /\  /            /\        Julian Ashworth
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