flex input and output

[Andrew Robertson]

Hi i have a simple question that I hope someon can answer:

I want to analyse input from a file and if it contains a certain text
string output it to a different file.  I think I've worked it all out
except for writing to the output file. I know I should be using
yyiput=file(where I have used the correct fopen construct) but I don't
know what to do with the output. I've read that you could redefine yyout
in the definition section but I haven't come across any examples. Any help
would be appreciated.

Cheers,
Andrew

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