Question

Say I have two classes, ClassA and ClassB.

ClassB inherits ClassA, and has some additional functions and variables.

Is it possible for me to make a function that can accept either ClassA or ClassB as the same argument, and let me determine which one was used?

Answer 1

Yes, you can take the parameter by reference:

void foo(ClassA& x) //or const ClassA

You’ll be able to pass both instances of ClassA or ClassB, and use RTTI to determine which type it actually is inside the function.

Alternatively, you can pass a pointer to ClassA, but references are to be preferred where possible.