In C++ please: 11.16 LAB: sumOfDigits

Write the recursive function int sumOfDigits(int n) that returns the sum of the digits of n recursively. For example, sumOfDigits(392) should return 14 because 3 + 9 + 2 = 14. Hint: use arithmetic operators to separate the digits of n.

Write function main to read in a single integer and to output the return value of sumOfDigits called on this value. You must call the recursive function sumOfDigits described above to receive credit.