Digital Root

Read a positive integer n from standard input and print its digital root: repeatedly replace n with the sum of its digits until a single digit remains. For example, 9875 becomes 9+8+7+5 = 29, then 2+9 = 11, then 1+1 = 2, so print the output shown in Expected Output.

Use an inner loop to sum the digits and an outer loop that repeats while n >= 10.

Expected Output:

= newline. No newline after the last line.

Hints4 available

Topics:

Loops

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