C# (씨샾) 최신 버전은 12입니다. (2024-03-26)

C#언어와 .NET 버전

https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/configure-language-version

Target	Version	C# language version default
.NET	8.x	C# 12
.NET	7.x	C# 11
.NET	6.x	C# 10
.NET	5.x	C# 9.0
.NET Core	3.x	C# 8.0
.NET Core	2.x	C# 7.3
.NET Standard	2.1	C# 8.0
.NET Standard	2	C# 7.3
.NET Standard	1.x	C# 7.3
.NET Framework	all	C# 7.3

• 버전 히스토리 - https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history 
• 위키 - https://en.wikipedia.org/wiki/C_Sharp_(programming_language)