Question about reading a file with mixed data in lines

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Thanks for reading this,
I think this is a simple question to answer, but for some reason I can't get this to work. What I am trying to do is read the line:
(10 (0 1 c91 0 3))
where the '0 1 c91 0 3))' can be arbitrary: '(10 (' is always assumed to be in the file. The former is dependent on the number of data points I want to collect.
What I want to do is parse the '0 1 c91' information inside: I don't care about the '0 3)) after, and I don't care about the '(10 (' before. The c91 in particular is crucial for what I use later with fscanf, where I read a certain number of rows, the number of rows being the decimal vale of hexadecimal c91.
Is this possible? Thanks for any advice!

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Walter Roberson
Walter Roberson il 17 Ott 2013
fscanf(fid, '(10 (%d%d%x%d%d))')

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