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  1. #include <string>
  2. #include <iostream>
  3. #include <regex>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	std::regex r("(a)|(b)|(c)");
  8. 	std::string s = "abcab";
  9. 	std::vector<std::string> astrings;
  10. 	std::vector<std::string> bstrings;
  11. 	std::vector<std::string> cstrings;
  12.  
  13. 	for(std::sregex_iterator i = std::sregex_iterator(s.begin(), s.end(), r);
  14.                              i != std::sregex_iterator();
  15.                              ++i)
  16.     {
  17.         std::smatch m = *i;
  18.         if (m[1].matched) {
  19.         	astrings.push_back(m[1].str());
  20.         	std::cout << "1:" << "    Added m[1]: " << m[1].str() << " at Position " << m.position(1) << '\n';
  21.         }
  22.         else if (m[2].matched) {
  23.         	bstrings.push_back(m[2].str());
  24.         	std::cout << "2:" << "    Added m[2]: " << m[2].str() << " at Position " << m.position(2) << '\n';
  25.         }
  26.         else if (m[3].matched) {
  27.         	cstrings.push_back(m[3].str());
  28.         	std::cout << "3:" << "    Added m[3]: " << m[3].str() << " at Position " << m.position(3) << '\n';
  29.         }
  30. 	}
  31. 	// Printing vectors
  32.     for (auto i: astrings)
  33.   		std::cout << i << ' ';
  34.   	std::cout << "\n";
  35.   	for (auto i: bstrings)
  36.   		std::cout << i << ' ';
  37.     std::cout << "\n";
  38.   	for (auto i: cstrings)
  39.   		std::cout << i << ' ';
  40.  
  41. 	return 0;
  42. }
  43.  
Success #stdin #stdout 0s 3544KB
comments (?)
stdin
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Standard input is empty
stdout
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1:    Added m[1]: a at Position 0
2:    Added m[2]: b at Position 1
3:    Added m[3]: c at Position 2
1:    Added m[1]: a at Position 3
2:    Added m[2]: b at Position 4
a a 
b b 
c
https://ideone.com/C6sOfo
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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