C# Online Compiler

Write, compile, and run C# code online

.NET SDK Required

This C# compiler requires the .NET SDK to be installed on the server. If you encounter compilation errors, the .NET SDK may not be available.

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main.cs

Input (STDIN)

Output

Click "Run" to execute your C# code...

About C# Programming Language

What is C#?

C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .NET but later it was approved by ECMA and ISO standards.

Key Features

Object-oriented programming
Type-safe language
Automatic memory management
Cross-platform development

Applications

You can use C# to create variety of applications, like:

Web applications
Windows applications
Mobile applications
Console applications
Game development

Sample C# Program with Input

Following is a sample program which takes name as input and prints your name with hello:

using System;

namespace Sample
{
    class Test
    {
        public static void Main(string[] args)
        {
            string name;
            name = Console.ReadLine();
            Console.WriteLine("Hello {0} ", name);
        }
    }
}

Frequently Asked Questions

Simply write your C# code in the editor above and click the "Run" button. Our online compiler will compile and execute your code instantly, showing the output in the console.

Click on the "Input (STDIN)" tab and enter your input data. Each line you enter will be available to your program through Console.ReadLine() calls.

Yes! Click the "Share" button to generate a unique URL for your code. You can also share directly on social media platforms like Twitter, Facebook, Reddit, and LinkedIn.

Our online C# compiler supports the latest C# 8.0 features including nullable reference types, async streams, pattern matching enhancements, and more.

The compiler has reasonable time and memory limits for security. File I/O operations and network access are restricted. It's perfect for learning, testing algorithms, and small programs.

Currently, the online compiler supports the standard .NET Core libraries. External NuGet packages are not supported in this online environment for security reasons.