Historie

Hier kommt einiges zur Geschichte von C. Also etwas von früher mal.

Hier folgt ein kurzer Text aus Quora. Von Sergey Zubkov.

Programming languages are generally written in English, with occasional BNF where necessary to define the grammar formally (the C spec has about 16 pages of BNF, the rest English)

If you're asking what languages are used to write C compilers, it depends on the compiler: many C compilers today are written in C++. The very first C compiler was written in either B or NB (see Chistory

for details).