// staticchecking/DogsAndRobots.cpp
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
#include <iostream>
using namespace std;

class Dog {
public:
 void talk() { cout << "Arf!" << endl; }
 void reproduce() {}
};

class Robot {
public:
 void talk() { cout << "Click!" << endl; }
 void oilChange() {}
};

template<class T> void speak(T speaker) {
 speaker.talk();
}

int main() {
 Dog d;
 Robot r;
 speak(d);
 speak(r);
}
/* Output:
Arf!
Click!
*/