In which language is the C# compiler written?

Question

I looked at the source code at http://referencesource.microsoft.com/, and it appears all the source code is in C#.

I also looked at the source code for the new C# co

Answer 1

A compiler is just a program like any other program. There is nothing magical or special about it. It takes some input and produces some output. In this particular case, the input just happens to be C# and the output just happens to be CIL, but that's no different from the input being a series of tax returns and the output being a report.