Find that single digit

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Manish loves solving mathematical problems. So, one day his professor gave him an interesting problem to solve. His professor gave him a number n and Manish need to do the following operation:- Find the sum of the digits of n. Let the sum be m. If m contains only one digit than stop! , else assign the value of m to n. Also not be a multiple of 9. If so then print 0. Manish is required to perfo

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solution.cppC++17

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