Preventing Override With Final

The final specifier stops a virtual method from being overridden by any further subclass.

Base class Engine has a virtual method string start() const returning "engine".

Create a derived class V8Engine that overrides start() to return "V8 started" and marks it so no subclass of V8Engine can override it further. Use override final.

Called through an Engine* pointing to a V8Engine, the program prints the output shown in Expected Output.

Do NOT write a main function.

Expected Output:

V8 started↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

Inheritance

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