inheritance_detect.cpp

#include <type_traits>

class A {};

class B {};

class C : public A {};
class D : public B {};

template<typename T>
inline typename std::enable_if<std::is_base_of<A, T>::value>::type some_func(T obj) {
	printf("Derived call...\n");
};

template<typename T>
inline typename std::enable_if<!std::is_base_of<A, T>::value>::type some_func(T obj) {
	printf("Normal call...\n");
};

int main(int argc, char *argv[]) {
	
	some_func(1);       // Normal Call
	A a; some_func(a);  // Derived Call
	B b; some_func(b);  // Normal Call
	C c; some_func(c);  // Derived Call
	D d; some_func(d);  // Normal Call

	system("PAUSE");
	return 0;
};