+#if __cplusplus >= 201703L && __has_include(<filesystem>)
+#include <filesystem>
+namespace filesystem = std::filesystem;
+#else
#include <experimental/filesystem>
+namespace filesystem = std::experimental::filesystem;
+#endif
int main() {
- std::experimental::filesystem::path path("/root");
+ filesystem::path path("/root");
(void)path;
}