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Loops
Simple errors

A common application of a while loop is to check user input to see if it is valid. For example, if you ask the user to enter y or n and they instead enter 7, then you should re-prompt them for input.

Instructions

1.

Fill in the loop condition so the user will be prompted for a choice over and over while choice does not equal 'y' and choice does not equal 'n'.

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