#include <array>
#include <iostream>
#include <string>

template <typename T>
concept StringType = requires(T t) { typename T::value_type; };

template <StringType String>
void printOutput(const String &s) {
    if constexpr (std::is_same<typename String::value_type, char>::value) {
        std::cout << s << "\n";
    }
    if constexpr (std::is_same<typename String::value_type, wchar_t>::value) {
        std::wcout << s << L"\n";
    }
}

int main() {
    printOutput(std::string("Test 1 2 3"));
    printOutput(std::wstring(L"test 3 4 5"));
    // printOutput("Test"); // ERROR
    return 0;
}