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Scripting + Flex + Bison problems

max621 · 2000-05-26T20:05:41

Hi, I''ve been doing my best to create a parser of my own, but it seems impossible from where I stand right now. Late last night I created a simple parser that would parse the string RUN 5 and output the command (run) and the amount (5). Though I was unable to get it to take the 5 from the string and put it into the int, but I needed a cast or something and I don''t know what to do. Also trying to do one of those example Bison / Flex programs, this is my Flex script: %% int num_lines = 0, num_chars = 0; \n ++num_lines; ++num_chars; . ++num_chars; %% main() { yylex(); printf( "# of lines = %d, # of chars = %d\n", num_lines, num_chars ); } When I compile it says num_lines and num_chars are undeclared Any help? Thanks