The document discusses the compilation of the rectangle class and its base class, shape, in C++. It poses a question regarding which commands can create an object, with multiple potential correct answers. The options provided include variations of instantiating shape and rectangle objects.

1. The Rectangle class header
And base class Shape header
The code compiles (Shape.cpp and Rectangle.cpp is implemented accordingly).
Which of the following commands will create an object?
Please note there could be multiple answers.
a)Shape rectangle(3.2,3.2);
b)Rectangle rectangle(3.2);
c)Rectangle rectangle(3.2,3.2);
d)Rectangle rectangle;
e)Shape shape;
f)Rectangle rectangle();