Sandbox::https://github.com/0voice/cpp_new_features/blob/main/cpp_11/003_rtti_std_is

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#include <iostream>

#include <type_traits>

class A {};

int main()

{

std::cout << std::boolalpha;

std::cout << "A\t" << std::is_fundamental<A>::value << '\n';

std::cout << "int\t" << std::is_fundamental<int>::value << '\n';

std::cout << "int&\t" << std::is_fundamental<int&>::value << '\n';

std::cout << "int*\t" << std::is_fundamental<int*>::value << '\n';

std::cout << "float\t" << std::is_fundamental<float>::value << '\n';

std::cout << "float&\t" << std::is_fundamental<float&>::value << '\n';

std::cout << "float*\t" << std::is_fundamental<float*>::value << '\n';

}