Overloading a virtual function in a child class

Question

I am just testing with virtual keyword and inheritance concepts in c++. I have written a small program:

#include
#include

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Answer 1

Once you overload a function from Base class in Derived class all functions with the same name in the Base class get hidden in Derived class.

Once you added the function cna_bsc::print(int a) to your derived class the function cna_MO::::print() is no longer visible to users of the Derived class. This is known as function hiding.

Solution: In order to make the hidden function visible in derived class, You need to add:

using cna_MO::print;

in the public section of your derived class cna_bsc.

Good Read:

What's the meaning of, Warning: Derived::f(char) hides Base::f(double)?