Protected Helper Method

A protected method can be called by a derived class but not from outside the hierarchy.

Base class Calculator (already written) has a PROTECTED method int square(int x) const returning x * x.

Create a derived class StatsCalculator with a PUBLIC method int squarePlusOne(int x) const that returns square(x) + 1 by calling the inherited protected helper.

For input 5, square(5) is 25 and the result is 26, so the program prints the output shown in Expected Output.

Do NOT write a main function.

Expected Output:

26↵

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

Hints2 available

Topics:

Inheritance

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