C Program Sum of Digits by Recursion

Output:

Please, Enter a number to calculate sum of digits by Recursion: 567

Using Recursion, Sum of digits of 567 = 18

C Program to calculate Sum of Digits of a given number.

/** ** C program to find sum of digits using recursive function */ #include <stdio.h> /* Function prototype / declaration */ int sumDigits(int num); /* main function*/ int main() { int num, sum; printf("Please, Enter a number to calculate sum of digits by Recursion: "); scanf("%d", &num); sum = sumDigits(num); printf("Using Recursion, Sum of digits of %d = %d", num, sum); return 0; } /** ** Recursive function to find sum of digits of a number **/ int sumDigits(int n) { /* Base condition / termination condition*/ if(n == 0) return 0; return ((n % 10) + sumDigits(n / 10)); }