COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
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Question
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Explanation:
Detailed explanation-1: -Using character sets In a character set a ^ character negates the following characters. For example [^A-Z] matches any single character that is not a capital letter.
Detailed explanation-2: -[A-Za-z] will match all the alphabets (both lowercase and uppercase).
Detailed explanation-3: -[A-z] will match ASCII characters in the range from A to z, while [a-zA-Z] will match ASCII characters in the range from A to Z and in the range from a to z .
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