1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
// is_signed example
#include <iostream>
#include <type_traits>
struct A { };
enum class B : int { x,y,z };
int main() {
std::cout << std::boolalpha;
std::cout << "is_signed:" << std::endl;
std::cout << "int: " << std::is_signed<int>::value << std::endl;
std::cout << "float: " << std::is_signed<float>::value << std::endl;
std::cout << "unsigned long: " << std::is_signed<unsigned long>::value << std::endl;
std::cout << "A: " << std::is_signed<A>::value << std::endl;
std::cout << "B: " << std::is_signed<B>::value << std::endl;
return 0;
}
|