![]() The gnu version which is called flex) is a program that takes a set of descriptions of possible tokensĪnd produces a C routine that implements a scanner. Rules that define the relationships among the tokens. Statements, declarations, blocks, and procedures in the program. ![]() Once the tokens are identified, the compiler needs to find the expressions, The algorithm that divides the program into units isĬalled a lexical analyzer, scanner, or lexer. Into meaningful units, called tokens, and then discover the relationshipĪmong these units. WhenĪ program is presented to a compiler, the compiler has to divide the program Tools for the generation of compilers: lex and yacc. ![]() The goal of this exercise is to acquaint yourself with two very powerful
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