C program to Sum of digit by Recursion

Below is C program to Sum of digit by Recursion .

Program:

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/* Sum of digit by recursion */   #include<stdio.h> int sod(int);   int main() {  int i;  printf(" Type any value : ");  scanf("%d",&i);  printf("Sum of digit : %d",sod(i));  return 0; }   int sod(int n) {  if(n<1)   return 0;  return(n%10+sod(n/10)); }