Use the editor in your virtual environment to find the source code for the program that you just compiled and executed. Briefly describe the following:

a$)$ The purpose of the code on line $19,$ i$.$e$.,$ what does this line of code accomplish?. $(2$ points$)$

b$)$ The purpose of the code on lines $21-27($if statement$).$ Make sure to explain each possibility handled by the if$.(3$ points$)$