27.2.2: C# Examples
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Overview
C# is a general-purpose, object-oriented programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines. It was developed around 2000 by Microsoft within its .NET initiative and later approved as a standard by Ecma (ECMA-334) and ISO (ISO/IEC 23270:2006). C# is one of the programming languages designed for the Common Language Infrastructure.
C# is one of the most popular current programming languages [1] , is the primary language for Windows application development and is often used in computer science and gaming courses.
Example
Hello World
// This program displays "Hello world!" // // References: // https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/inside-a-program/hello-world-your-first-program public class Hello { public static void Main() { System.Console.WriteLine("Hello world!"); } }
Output
Hello world!
Discussion
Each code element represents: [2]
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//
begins a comment -
public class Hello
begins the Hello World program -
{
begins a block of code -
public static void Main()
begins the main function -
System.Console.WriteLine()
calls the standard output write line function -
"Hello world!"
is the literal string to be displayed -
;
ends each line of C# code -
}
ends a block of code
C# IDEs
There are many free cloud-based and local IDEs available to begin coding in C#. Check with your instructor or do your own research for recommendations.
Local IDEs
- Microsoft Visual Studio
- Visual Studio Code
References
- Wikiversity: Computer Programming
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TIOBE: Index
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Wikibooks: Programming Fundamentals/Hello World
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