Explain with example Pure and impure functions. – InterviewSolution

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1.	Explain with example Pure and impure functions.
Answer» The only result of calling a pure function is the return value. EXAMPLES of pure functions are strlen(), pow(), sqrt() etc. Examples of impure functions are printf(), rand(), time(), etc. If a function is known as pure to COMPILER then Loop OPTIMIZATION and subexpression ELIMINATION can be applied to it.

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