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// is_pod example
#include <iostream>
#include <type_traits>
struct A { int i; }; // C-struct (POD)
class B : public A {}; // still POD (no data members added)
struct C : B { void fn(){} }; // still POD (member function)
struct D : C { D(){} }; // no POD (custom default constructor)
int main() {
std::cout << std::boolalpha;
std::cout << "is_pod:" << std::endl;
std::cout << "int: " << std::is_pod<int>::value << std::endl;
std::cout << "A: " << std::is_pod<A>::value << std::endl;
std::cout << "B: " << std::is_pod<B>::value << std::endl;
std::cout << "C: " << std::is_pod<C>::value << std::endl;
std::cout << "D: " << std::is_pod<D>::value << std::endl;
return 0;
}
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