This course introduces you to fundamental programming concepts in C#, one of the most popular languages in the world. The highly interactive course begins with a simple Hello world program and proceeds on to cover common concepts such as conditional statements, loop statements, and methods in C#. It also reflects upon the idea of arrays as well as the power they give to the programmer to write better code. Finally, it dives deeper in order to teach about advanced concepts such as classes, inheritance, interfaces, and delegates in C# through interactive challenges and exercises.

C# for Programmers: A Practical Guide

## Problem Statement 

In this exercise you have to write a method `DigitSum` to find the **sum** of **digits** of a number using *recursion*. 

### Example 
**Input:**  
```
A number given: 25 


# Problem Statement 

In this exercise you have to write a method `DigitSum` to find the **sum** of **digits** of a number using *recursion*. 

## Example 
**Input:**  
```
A number given: 25 


This exercise requires you to use recursion to calculate the sum of digits of a number passed 

Introduction

Variables and Casting

Operators

Conditions

Loops

Arrays

Methods

Exception Handling

Classes

OOP in C#

Delegates

C# Exam

Exercise 3: Sum of Digits Using Recursion

Problem Statement

Example