# Compiler

A tool that checks C# source code and converts it into Common Intermediate Language.

## What is **Compiler** in C#?

**Compiler** — A tool that checks C# source code and converts it into Common Intermediate Language.

```csharp
class Greeting
{
    string Message = "Hello, C#!";
}
```

Level: Novice · [More C# terms at this level](https://www.ask-codey.com/glossary/subjects/c-sharp/novice)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/compiler