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convert text like '(18)' to number

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Stewart Smith
Stewart Smith 2019-11-8
回答： Walter Roberson 2019-11-8
is there simple way to extract this text and convert to number?

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Walter Roberson
Walter Roberson 2019-11-8
S = '(18)';
value = sscanf(S, '(%f' )
You can get more complicated, like,
S = '(18,-3.8)';
value = sscanf(S, '(%f,%f)');

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