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

int main(int argc, char **argv)
	{
	if(argc<3) {
		std::cerr << "Usage: regexp_tester [regex] [string]" << std::endl;
		return -1;
		}

	try {
		std::regex match(argv[1]);
		std::smatch res;
		std::string arg = argv[2];
		if(std::regex_search(arg, res, match)) {
			for(unsigned int i=0; i<res.size(); ++i) {
				std::cout << i << ":\t |" << res[i] << "|" << std::endl;
				}
			}
		else {
			std::cout << "no match" << std::endl;
			}
		}
	catch(std::exception& ex) {
		std::cout << "exception: " << ex.what() << std::endl;
		}
	}