Help Chef to Find Digital Root

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The digital root (also called repeated digital sum) of a number is a single digit value obtained by an iterative process of summing digits. Digital sum of 65536 is 7, because 6+5+5+3+6=25 and 2+5 = 7. Write a program that takes an integer as input and prints its digital root. Constraints - 1 ≤ N ≤ 10^7 Example Input Output 65536 7 1214 8 3 3 9199999 1

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solution.cppC++17

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