Question: Write a program called CreateItemFile that creates a file of items carried by the company called Items.txt . Include a three - digit item number

Write a program called CreateItemFile that creates a file of items carried by the company called Items.txt

.

Include a three

-

digit item number and up to a

20 -

character description for each item. Issue an error message if the user tries to store an item number that already has been used. Continue to prompt the user for item values until the terminating value of

999

is entered

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