neingeist/cpp-exercises
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add a copy and a "normal" constructor

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This commit is contained in:
neingeist 2014-04-18 19:26:02 +02:00
parent ddec3de9b6
commit f6d9636caa
1 changed files with 12 additions and 0 deletions
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12
classes.cpp
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@ -3,6 +3,13 @@
class Animal { class Animal {
public: public:
Animal() {
std::cout << "constructor" << std::endl;
}
Animal(const Animal& other) {
std::cout << "copy constructor" << std::endl;
}
// Note: using *virtual* does the difference here! // Note: using *virtual* does the difference here!
virtual void makeSound() const { virtual void makeSound() const {
std::cout << "<generic animal sound> from " << this << std::endl; std::cout << "<generic animal sound> from " << this << std::endl;
@ -49,16 +56,21 @@ int main() {
std::cout << "== Some animals" << std::endl; std::cout << "== Some animals" << std::endl;
Animal animal; Animal animal;
animal.makeSound(); animal.makeSound();
std::cout << "== animal" << std::endl;
call(animal); call(animal);
callref(animal); callref(animal);
callptr(&animal); callptr(&animal);
std::cout << "== cat" << std::endl;
animal = cat; // <- lol, operator animal = cat; // <- lol, operator
animal.makeSound(); animal.makeSound();
call(cat); call(cat);
callref(cat); // <- meow callref(cat); // <- meow
callref(animal); // <- generic
callptr(&cat); // <- meow callptr(&cat); // <- meow
std::cout << "== cow" << std::endl;
animal = cow; // <- lol, operator animal = cow; // <- lol, operator
animal.makeSound(); animal.makeSound();
call(cow); call(cow);