COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Concatenation
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Selection
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Addition
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Iteration
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Detailed explanation-1: -1 Answer. Easiest explanation: It indicates iterations which can vary from zero to any number.
Detailed explanation-2: -It is a postfix operator, just like the 2 in x2. So ‘. *’ means “zero or more characters", because ‘. ‘ matches any character, and ‘*’ forces the preceding pattern-the ‘. ‘-to match zero or more times.
Detailed explanation-3: -A regular expression is a method used in programming for pattern matching. Regular expressions provide a flexible and concise means to match strings of text. For example, a regular expression could be used to search through large volumes of text and change all occurrences of “cat” to “dog".
Detailed explanation-4: -In regular expressions, asterisk (*) means “match zero or more of the preceding character.” To make a “wildcard” (that is, an expression that matches anything) with regular expressions, you must use ‘. *’ (dot asterisk). This expression means, “match zero or more of any character.”
Detailed explanation-5: -The asterisk (*) stands for taking the complex conjugate. The integrals in this formula must be taken over all of the values of the coordinates, and if the coordinates can become infinite, the integrals must converge.