Please write complete code for C++:

Inheritance

Step 1 - DEFINE

1) Create this class first: Square

two variables: length, width

five function: getWidth, setWidth, getLength, setLength, getArea

2) Write the class second: Cube

inheritance the square class code

one variable: height

three functions: getHeight, setHeight, getVolume

Step 2 - DECLARE 3 different instances of a cube.

Step 3 - USE the three instances of the cube.

set the length, width and height of each

get volume of each cube