regex_match_sample.cc

#include <iostream>
#include <regex>
#include <string>

int main(int argc, char const* argv[])
{
  using namespace std;
  regex r("hoge:(abc)");
  smatch res;
  string input = "hoge:abc";
  string expected = "abc";
  if(regex_match(input, res, r)){
    cout << "expected: \"" << expected << "\"\n"
        << "actual: \"" << res[1].str() << "\"" << endl;
  } else {
    cout << "Unmatched" << endl;
  }
  return 0;
}

// $ g++ --version
// g++ (GCC) 4.8.3
// Copyright (C) 2013 Free Software Foundation, Inc.
// This is free software; see the source for copying conditions.  There is NO
// warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// $ 
// $ g++ -std=c++11 regex_match_sample.cc;./a.out
// expected: "abc"
// actual: ":abc"