regex fails to match simple string

Asked Nov 19 '15 at 14:02

Active Nov 19 '15 at 14:02

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GNU regex fails to match

string st = "ABCDAZEA";
cout<<"S:\t"<<st<<endl;
std::regex  expr("[A-Z]+", std::regex::extended );
std::smatch matches;
std::regex_search(st, matches, expr);
cout<<"found "<<matches.size()<<endl;
fflush (stdout);

what's wrong in my code ?

asked Nov 19 '15 at 14:02

BNR

1

What is your compiler version ? – Chnossos Nov 19 '15 at 14:03
What compiler and version are you using? I get 1 match here: http://coliru.stacked-crooked.com/a/b61a66974d6da11e – NathanOliver Nov 19 '15 at 14:04
Shooting from the hip here (dunno std::regex) but my guess is that `matches` are the capture groups and you have none... What about `([A-Z]+)` as regex - does that work? – SamWhan Nov 19 '15 at 14:07
$ g++ --version g++.exe (GCC) 4.8.1 – BNR Nov 19 '15 at 14:08
You need to upgrade to at least GCC 4.9 to use regex, I think. – Wiktor Stribiżew Nov 19 '15 at 14:23
thanks. I'll try 4.9 – BNR Nov 19 '15 at 14:28

regex fails to match simple string

0 Answers0