Find the sum of digits of a number using recursion

SOURAV KUMAR PATRA September 28, 2020

 Problem statement:- Program to Find the sum of digits of a number using recursion.

Data requirement:-

   Input Data:- num

  Output Data:-SumOfDigits(int num)

Program in C

Here is the source code of the C Program to Find the sum of digits of a number using recursion.

Code:

#include<stdio.h>
int SumOfDigits(int num)
{
   if(num>0)
    return ((num%10) +SumOfDigits(num/10));
   else if(num==0)
    return 0;
}
int main()
{
    int num;
    printf("Enter the Number:");
    scanf("%d",&num);
    printf("Sum of digits of a given Number Using Recursion is:%d",SumOfDigits(num));
}

Input/Output:
Enter the Number:215
Sum of digits of a given Number Using Recursion is:8

Program in C++

Here is the source code of the C++ Program to Find the sum of digits of a number using recursion.

Code:

#include<iostream>
using namespace std;
int SumOfDigits(int num)
{
   if(num>0)
    return ((num%10) +SumOfDigits(num/10));
   else if(num==0)
    return 0;
}
int main()
{
    int num;
    cout<<"Enter the Number:";
    cin>>num;
    cout<<"Sum of digits of a given Number Using Recursion is:"<<SumOfDigits(num);
}

Input/Output:
Enter the Number:4563
Sum of digits of a given Number Using Recursion is:18

Program in Java

Here is the source code of the Java Program to Find the sum of digits of a number using recursion.

Code:

import java.util.Scanner;
public class SumOfDigitsGivenNumber {
static int SumOfDigits(int num)
{
   if(num==0)
   return 0;
   else
    return ((num%10) +SumOfDigits(num/10));
}
public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
System.out.print("Enter the Number:");
int n=cs.nextInt();
System.out.print("Sum of digits of given Number Using Recursion is:"+SumOfDigits(n));
cs.close();
}
}

Input/Output:
Enter the Number:1432789
Sum of digits of given Number Using Recursion is:34

Program in Python

Here is the source code of the Python Program to Find the sum of digits of a number using recursion.

Code:

def SumOfDigits(num):
    if num==0:
        return 0
    else:
        return ((num%10) +SumOfDigits(num//10))
num=int(input("Enter the Number:"))
print("Sum of digits of given Number Using Recursion is:",SumOfDigits(num))

Input/Output:
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