In c++, write a function that takes a nonnegative integer and returns the sum of its digits. For example, 23 its sum is 5, 524 its sum is 11.

C++ for Engineers and Scientists
4th Edition
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Bronson, Gary J.
Chapter9: Completing The Basics
Section: Chapter Questions
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In c++, write a function that takes a nonnegative integer and returns the sum of its digits. For example, 23 its sum is 5, 524 its sum is 11.
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