c++ class

please i need an overdetailed answer

Create a class called Triangle that includes the following data members: - base (double) - height (double) - Your class should have a constructor that initializes all members to 1. - Also, provide set and get functions for both attributes. - The set functions should verify that either values are larger than 0.0 and less than 20.0, otherwise, it will display an error message. - The class should have a function Perimeter to compute and return the perimeter of the triangle. [Note: Perimeter =b+h+bb+h2, where b is the base, h is the height]