#include #include #include "simple_string.hpp" #include "moving_string.hpp" #include "rrefopt_string.hpp" int main() { //using namespace simple; //using namespace moving; using namespace rrefopt; string a("a"), b("b"), c("c"), d("d"); string abcd(a + b + c + d + a + b + c + d); std::cout << abcd << std::endl; return EXIT_SUCCESS; }