Multiple Inheritance

Oct 23, 2012 · Comments
code c++

What is the output to the following code?

Output

Foo FooToo Bar FootTooBar

Why?

1. An instance of FooTooBar needs to be created according to main()

2. To create that instance, we first need the base classes too, hence FooToo and Bar classes

3. Now notice the keyword virtual everytime inheritance is defined

   • This does half the magic by ensuring that the member data instances are shared with any other inclusions of that same base in further derived classes

   • This is very handy for multiple inheritance

As an exercise you may try to remove virtual from some derived class and see what results you get.