Project 3 - Currency Type

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Project 3: Currency Type

It’s time for another project. You’re going to continue building on the `fixed` type from Project 2 and incorporate what you’ve learned about locales and I/O. Your task this time is to write a `currency` type.

The value is stored as a fixed-point value. I/O is formatted using the `get_money` and `put_money` manipulators.

Make sure you can add two currency amounts to get a currency value, subtract two currency amounts to get currency, multiply and divide currency by an integer or rational value to get a currency result, and divide two currency values to get a rational result.

As with any project, start small and add functionality as you go. For example, start with the basic data representation, then add I/O operators. Add arithmetic operators one at a time. Write each test function before you implement the feature.