A compiler or interptreter for a programminning language is often decomposed into two parts: Read the source program and discover its structure. Process this structure, e.g. to generate the target program. Lex and Yacc can generate program f

Its a Lex + Yacc tutorial. Very good for starting to write a compiler. Gives an elaborate example for code generation.

Lex and Yacc calculator compiler in c-Lex and Yacc calculator compiler in c++