This course introduces the basics of C# programming. It is an ideal resource for beginners aiming to become C# developers.

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C_sharp

C# is a versatile and robust language, ideal for developing software applications from games to enterprise solutions. This course introduces C sharp fundamentals, starting with writing your first program and understanding core concepts. You'll progress to more complex topics like loops, string and array manipulation, and mastering best practices for code organization.
By the end, you'll be well-prepared to pursue opportunities as a C# developer in industries like gaming and finance, equipped to create high-performance applications across platforms.

Learn C#

# Function
We can divide a program into procedural components or modules called **functions** in C#. We are already familiar with the `Main()` function. This function can be copied and reused in a programming technique called a **modular** or **procedural approach**, also known as the divide and conquer approach. We should always try to design functions that can be reused in other programs.

Broadly, there are two types of functions, which we’ll explore in the following sections.

## The structure of a function

The following slides illustrate various parts of a **function definition**:

> A **function name** can only contain letters (`A`—`Z` and `a`—`z`) and the underscore symbol (`_`). It may also contain digits (`0`–`9`), but the function name can’t start with those. For example, `Key_2` is a valid function name, but `2_key` is not. Function names are case-sensitive, meaning that `name`, `Name`, and `NAME` are three different functions.

There are two main parts of a function definition:

- **Header:** The first line ending with closing parenthesis `)`
- **Body:** The block of statements below the function header that start with an opening brace `{` and end with a closing brace `}`

The function header contains the keywords `static` and `void` (`void` means that the function does not have a return value), the function name, `sayHello`, and the parameters in `()`. All statements in the function body are written as a block of code, enclosed in `{` and `}`. We cannot write the body of the function without braces.
# Function call

The following program demonstrates the creation of a function and a function call.


Learn to divide a program into functions or subprograms in C#.


Simple User-defined Functions

Learn to divide a program into functions or subprograms in C#.

About the Course

C# Basics

Loops in C#

C# Arrays and Strings

C# Functions

Wrap Up

Simple User-defined Functions

Function

The structure of a function