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Thread: C++: can i create Polymorphism without 'virtual'?

  1. #16
    2kaud's Avatar
    2kaud is offline Super Moderator Power Poster
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    Re: C++: can i create Polymorphism without 'virtual'?

    When using polymorphism, the type of the pointer used should be a pointer to the base class. So

    Code:
    Test(ClassDerived *clsPointer) {
    becomes

    Code:
    Test(ClassDerivedNull *clsPointer) {
    So that
    Code:
    int main() {
    	ClassDerivedNull n;
    	Test t2(&n);
    
    	ClassDerived d;
    	Test t1(&d);
    }
    displays

    Code:
    MouseClick NULL implementation
    Move NULL implementation
    MouseClick REAL implementation
    Move NULL implementation
    Last edited by 2kaud; April 29th, 2018 at 06:13 AM.
    All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!

    C++17 Compiler: Microsoft VS2017 (15.8.4)

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