Why is it OK for a function to sometimes produce side effects?

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter6: User-defined Functions
Section: Chapter Questions
Problem 10SA: Why do you need to include function prototypes in a program that contains user-defined functions?...
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Why is it OK for a function to sometimes produce side effects?
Transcribed Image Text:Why is it OK for a function to sometimes produce side effects?
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