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1.12: C# Examples

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    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.


    Hello World

    // This program displays "Hello world!"
    // References:
    public class Hello
        public static void Main()
            System.Console.WriteLine("Hello world!");


    Hello world!


    Each code element represents:[2]

    • // 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


    • Wikiversity: Computer Programming

    1. TIOBE: Index
    2. Wikibooks: Programming Fundamentals/Hello World

    1.12: C# Examples is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts.

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