Do Programming Project 6.8 , except remove the two private integer variables and use a single variable of type double to store the monetary value in their place. The rest of the functions should have the same headers. For several functions, this will require code to convert from an integer format to appropriately modify the double. For example, if the monetary amount stored in the double is 4.55 (representing $4.55) and if the function to set the dollar amount is invoked with the value 13, then the double should be changed to 13.55. While this will take some work, the code in your test program from Programming Project 6.8 should still work without requiring any changes. This is the benefit of encapsulating the member variables.