The question is from Chapter 15 of Systems Analysis and Design 8th edition by Ke

Question

The question is from Chapter 15 of Systems Analysis and Design 8th edition by Kendall and Kendall.

Define a regular expression for validating each of the following:
a. A U.S. zip code, which must have five digits, followed by an optional hyphen and four digits.
b. A telephone number in the format (aaa) nnn-nnnn, where aaa represents the area code and the ns
represent digits.
c. A date in the form of day-month-year, where the month is a three-letter code and the year is four
digits. Hyphen must separate the day and month and year and month.
d. The alphabetic derivation code illustrated in this chapter for a magazine subscriber. The format is
99999XXX9999XXX, where X represents a letter and 9 represents a number.

Explanation / Answer

a) ^d{5}-d{4}$

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