Aggregate Over a List of Interface Values

The IPriced interface declares int Price(), and the Coffee (3) and Cake (5) classes already implement it. Complete the Cart.Total method so it adds up the Price() of every item in the list and returns the total. Do NOT write a Main method.

For a cart holding Coffee, Cake, Coffee the program prints the output shown in Expected Output.

Expected Output:

11↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

Topics:

Interfaces

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Your Output

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