#include <string>
#include <iostream>
#include <algorithm>
#include <regex>
#include <vector>
 
std::regex operator ""_re (char const* const str, std::size_t) {
    return std::regex{str};
}
 
std::vector<std::string> split(const std::string& text, const std::regex& re) {
	const std::vector<std::string> parts(
		std::sregex_token_iterator(text.begin(), text.end(), re, -1),
        std::sregex_token_iterator());
    return parts;
}
 
int main() {
	const std::vector<std::string> parts = split("Quick brown fox.", "\\s+"_re);
	std::copy(parts.begin(), parts.end(),
              std::ostream_iterator<std::string>(std::cout, "\n"));
    return 0;
}

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