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  1. #include <iostream>
  2. #include <regex>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	std::string buffer = " li 12.12 si 43,23 45 31 uf 889 uf31 3.12345";
  7. 	std::regex rx(R"((?:^|\s)([+-]?[[:digit:]]+(?:\.[[:digit:]]+)?)(?=$|\s))");
  8. 	std::smatch m;
  9. 	std::string str = buffer;
  10.     while (regex_search(str, m, rx)) {
  11. 		std::cout << "Number found: " << m[1] << std::endl;
  12. 		str = m.suffix().str();
  13. 	} // 12.12 45 31 889 3.12345
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 3496KB
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stdin
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Standard input is empty
stdout
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Number found: 12.12
Number found: 45
Number found: 31
Number found: 889
Number found: 3.12345
https://ideone.com/3nOQEZ
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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