This lab introduces you the concepts of object$-$oriented programming. In the paradigm, a

program consists of objects that interact with each other. Objects are the instantiation of a

class, which includes instance variables as attributes and functions for the object as methods.

Then, we will use the Sine function in mathematics to plot a graph in the terminal screen.

In this lab, you will work on two source codes$/$files$.$ First, you will add codes to the existing

skeleton code to make the classes function as intended. Then, you will use a testing program to

test how the components in the code interact.