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| // make_signed #include <iostream> #include <type_traits> enum ENUM1 {a,b,c}; enum class ENUM2 : unsigned char {x,y,z}; int main() { typedef std::make_signed<int>::type A; // int typedef std::make_signed<unsigned>::type B; // int typedef std::make_signed<const unsigned>::type C; // const int typedef std::make_signed<ENUM1>::type D; // int typedef std::make_signed<ENUM2>::type E; // signed char std::cout << std::boolalpha; std::cout << "typedefs of int:" << std::endl; std::cout << "A: " << std::is_same<int,A>::value << std::endl; std::cout << "B: " << std::is_same<int,B>::value << std::endl; std::cout << "C: " << std::is_same<int,C>::value << std::endl; std::cout << "D: " << std::is_same<int,D>::value << std::endl; std::cout << "E: " << std::is_same<int,E>::value << std::endl; return 0; }
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