You might introduce them to the concepts of data validation by asking them to determine if a particular string of characters represents a telephone number.
- 867-5309
- 555 123-456
- (555) 456 - 1234
- +1 555-234-9874
- 911
- extra credit for:
- +66 44-515-0123
- +47 2291 2345
- 02/xx xx xx xx (inside Czech Republic)
- +420 (0)2/xx xx xx xx (outside Czech Republic)
There is an ISO standard (E.164) the details all the possibilities....
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I Go Back to Sleep, Now.
OGB
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