The following code example is taken from the book
C++ Templates - The Complete Guide, 2nd Edition
by David Vandevoorde, Nicolai M. Josuttis, and Douglas Gregor,
Addison-Wesley, 2017
© Copyright David Vandevoorde, Nicolai M. Josuttis, Douglas Gregor 2017
#include <iostream>
#include <typeinfo>
#include "myfirst.hpp"
// implementation/definition of template
template<typename T>
void printTypeof (T const& x)
{
std::cout << typeid(x).name() << '\n';
}