CS253 HW4: Time to get classy! Description For this assignment, you will write a standalone class called Ratio, which will represent a fraction, e.g., 2/3 or 6/5. Specifically, you will provide Ratio.h, which will contain the interface of that class, and the library libhw4.a, which will contain the implementation of that class. Methods Some methods are forbidden: no default ctor The default (no-argument) ctor for Ratio must.