Using the same definition of the rational numbers as in problem P85696, write the functions

that returns respectively the sum, the substraction, the product and the division of two rational numbers given, “normalized” according to the same convention that in the exercise : “”.

Write also the procedure

that adds an unit to the rational number *r*.

**Precondition**

The rational numbers *a* and *b* are correct and normalized.
In the case of division, *b* ≠ 0.

**Observation**
You only need to submit the required classes;
your main program will be ignored.
Strictly obey the type definitions of the statement.

Information

- Author
- Salvador Roura
- Language
- English
- Translator
- Carlos Molina
- Original language
- Catalan
- Other languages
- Catalan
- Official solutions
- C++
- User solutions
- C++