Sum of Digits

Easy Recursion PRO

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Problem Statement

Write a C program using recursion to find the sum of digits of a given positive integer.

Input Format

A positive integer.

Output Format

Print the sum of digits.

Constraints

1 <= N <= 1000000

Sample Input

Sample Output

Explanation

Recursive relation: sumDigits(n) = (n % 10) + sumDigits(n / 10) with base case n == 0 returning 0.

Starter Code

#include <stdio.h>

int sumOfDigits(int n) {
    // Write your recursive logic here
}

int main() {
    int n;
    if (scanf("%d", &n) == 1) {
        printf("%dn", sumOfDigits(n));
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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