C++ inheritance hide method?

Asked Oct 07 '14 at 17:18

Active Oct 07 '14 at 17:26

Viewed 45 times

Why we can not call this function Base::P(int)?

class Base
{   
protected:
    string s = "Base";
public:
    void P(int a){ cout << "Base" << endl; }
};
class Derived : public Base

public:
    using Base::s;  
    void P(){ cout << "Derived" << endl; }
};

int main()
{
    Derived a;
    a.P(2);   // Error, Why we can not use Base::P(int)?
}

Why we can not use Base::P(int)?

edited Oct 07 '14 at 17:26

asked Oct 07 '14 at 17:18

Person.Junkie

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1

Why do expose the protected member `s` and not the hidden function with `using Base::P` ? – Oct 07 '14 at 17:20
_"inheritance hide method?"_ as you notice yes. – πάντα ῥεῖ Oct 07 '14 at 17:20
2

You need `using Base::P;` in Derived. Don't know why, just the rule. – Neil Kirk Oct 07 '14 at 17:21
you can alternatively cast `((Base)a).P(2)` http://ideone.com/v55o02 – Logan Murphy Oct 07 '14 at 17:29
Possible duplicate of http://stackoverflow.com/questions/14212190/c-issue-with-function-overloading-in-an-inherited-class – Christophe Oct 07 '14 at 17:29
See also: http://stackoverflow.com/questions/1628768/why-does-an-overridden-function-in-the-derived-class-hide-other-overloads-of-the – Oct 07 '14 at 17:30

C++ inheritance hide method?

0 Answers0