please wait
Interface tutorial's example
Jul 17, 2012 at 3:45pm
In the first (and further) example of interface's tutorial..this is used
" CRectangle rect;
CTriangle trgl;
CPolygon * ppoly1 = ▭
CPolygon * ppoly2 = &trgl;
ppoly1->set_values (4,5);
ppoly2->set_values (4,5);
"
I can use this also-
" rect.set_values (4,5);
trgl.set_values (4,5);
"
WHY SHOULD I USE THE EARLIER ONE???? WHY IS IT SPECIAL??? WHAT ARE THE SPECIAL FETURES??
" CRectangle rect;
CTriangle trgl;
CPolygon * ppoly1 = ▭
CPolygon * ppoly2 = &trgl;
ppoly1->set_values (4,5);
ppoly2->set_values (4,5);
"
I can use this also-
" rect.set_values (4,5);
trgl.set_values (4,5);
"
WHY SHOULD I USE THE EARLIER ONE???? WHY IS IT SPECIAL??? WHAT ARE THE SPECIAL FETURES??
Jul 17, 2012 at 3:49pm| WHY SHOULD I USE THE EARLIER ONE???? |
BECAUSE SOMETIMES YOU HAVE A POINTER TO AN OBJECT RATHER THAN THE OBJECT ITSELF, FOR EXAMPLE IF YOU CREATE AN OBJECT USING NEW.
Jul 17, 2012 at 4:41pm
okay.
any why making pointer of base class'es type more important that of derived class'es type..?
any why making pointer of base class'es type more important that of derived class'es type..?
Jul 17, 2012 at 4:48pm
It's not more important. They're both useful in the right place.
Last edited on Jul 17, 2012 at 4:48pm
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