Operator overloading Using Ratio Class

Question

https://code.sololearn.com/ca142a50a21A
The question is:
Implement the binary subtraction operator, the unary negation operator, and the less-than
operator < for the Ratio class (see Example 11.4 on page 259).

In line 46 of this code I have to return an integer..Will I write return 0?
Also for this code,how can I write the main() properly to test the code?

Answer 1

@Martin Yes, I have noticed that too. The examples given in one chapter are not completed..it's like the rest of them are in the example of another chapter...They are all related