### Question 18.15

Where can I get a BNF or YACC grammar for C?

The definitive grammar is of course the one in the ANSI standard; see question 11.2. Another grammar (along with one for C++) by Jim Roskind is in pub/c++grammar1.1.tar.Z at ics.uci.edu . A fleshed-out, working instance of the ANSI grammar (due to Jeff Lee) is on ftp.uu.net (see question 18.16) in usenet/net.sources/ansi.c.grammar.Z (including a companion lexer). The FSF's GNU C compiler contains a grammar, as does the appendix to K&R2.

The comp.compilers archives contain more information about grammars; see question 18.3.

References: K&R1 Sec. A18 pp. 214-219
K&R2 Sec. A13 pp. 234-239
ANSI Sec. A.2
ISO Sec. B.2
H&S pp. 423-435 Appendix B

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