Using Visual Studio 

Create a console project.

1. Create an interface "IMyInterface.cs" - Add a method "string iMessage()"

2. Create a class named "C1.cs" - Add 4 private data members, create property for each data member double loanAmnout=0.0; double years=0.0; double interests=0.0; double interestRate=0.0;

3. - Add a constructor with parameters to assign values to loanAmnout, years, interestRate with values that user entered.

4. - Add one method PayInterests() to return the interests interests = loanAmnout * interestRate * years

5. - Inheritate "IMyInterface", implement the method " iMessage()", return string "Be Ready!

6. In Program.cs, have users to enter loanAmnout, years, interestRate. - Call method PayInterests() to display total interests. - Call iMessage() to display "Be Ready!