#include <iostream>
#include <string>
#include <regex>
 
int main()
{
    std::regex const pattern { "." };
    std::string target { "cette phrase contient un point" };
    std::cout << target << " : " << std::boolalpha << 
        std::regex_search(target, pattern) << std::endl;
        
    target = "cette phrase contient un point.";
    std::cout << target << " : " << std::boolalpha << 
        std::regex_search(target, pattern) << std::endl;
}