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How can I declare a pure virtual member function that is also const? Can I do it like this?
virtual void print() = 0 const; or like this?
virtual const void print() = 0; 
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From my book: "Because you have declared Volume() as const, its implementation in any derived class must also be const. Remember that const and non-const varieties of a function with the same name and parameter list are different functions.
To declare a constant member function, place the const keyword after the closing parenthesis of the argument list. Show activity on this post. Hence, the = 0 must come after the const . I prefer this answer, since it refers to the c++ specification, instead of the microsoft one.
A pure virtual function or pure virtual method is a virtual function that is required to be implemented by a derived class if the derived class is not abstract. Classes containing pure virtual methods are termed "abstract" and they cannot be instantiated directly.
A virtual function is a member function that you expect to be redefined in derived classes. When you refer to a derived class object using a pointer or a reference to the base class, you can call a virtual function for that object and execute the derived class's version of the function.
From Microsoft Docs:
To declare a constant member function, place the
constkeyword after the closing parenthesis of the argument list.
So it should be:
virtual void print() const = 0; If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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