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Here's a demo of what the finished
shopping program will look like.

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It needs to greet the user with
the message Welcome to the widget store!

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Then it needs to ask them How
many widgets they're ordering?

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It should wait for them to type
in a quantity and press Enter.

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The program will need to store
whatever quantity they enter in

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the computer's memory.

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Each widget costs $10, so

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the program should multiply the quantity
by ten to get the total cost.

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It should print out a message that
includes the quantity the user typed in

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and the total cost.

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And one more thing,
the store wants to offer discounts for

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ordering a lot of widgets at once.

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So if a user orders 50 or more widgets,
they should only be charged $9 per widget.

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And if a user orders 100 or

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more widgets, then they should
only be charged $8 per widget.

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So here's our checklist of features
our program is going to need.

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Over the rest of the course,

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we'll learn the Ruby features
we need to implement each one.

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Then we'll cross that feature
off our list when we're done.