Exercise $4\mathrm{.}1-$ Test your knowledge

Answer the following questions. If you get stuck, try Googling the answers if necessary:

What does the $C$# keyword void mean?

What are some differences between imperative and functional programming styles?

In Visual Studio Code, what is the difference between pressing F$5,$ Ctrl or Cmd $+$

F$5,$ Shift $+$ F$5,$ and Ctrl or Cmd $+$ Shift $+$ F$5?$

Where does the Trace.WriteLine method write its output to$?$

What are the five trace levels?

What is the difference between Debug and Trace?

When writing a unit test, what are the three As$?$

When writing a unit test using xUnit, what attribute must you decorate the test

methods with?

What dotnet command executes xUnit tests?

What is TDD$?$