Need help with this c++ program

Question

Create a class named ‘House’. The class should have an integer type data member called ‘Area’. Create and initialize three objects from the class ‘House’ using three different types of ctors.

Answer 1

Show us your attempt. Dont ask your school homework here

Answer 2

Please provide your attempt.

https://www.sololearn.com/discuss/333866/?ref=app

Answer 3

Soheer Khan third one is "copy constructor".

Answer 4

I already did using the the simple ctor and prematerise ctor . I just don't know what is the third type .