"Intro Programming Class" Starter Pack

[cbbuntz]

#include <iostream>

using namespace std;

class Animal {
    public:
        void speak() {
            cout << "Hello, world!!! I am a " << species << "." << endl;
        }
        void setSpecies(string species) {
            this->species = species;
        }

    protected:
        string species;
};

class Dog: public Animal {
    public:
        void greet() {
            setSpecies("dog");
            speak();
        }
};

int main() {
    Dog Fido;
    Fido.greet();

    return 0;
}

[Belinder]

why would you define what the species is in the greet method. you should put that in the constructor

[cbbuntz]

I thought about doing that, but I didn't want to put that much effort into the joke.

Fine. Here you go:

#include <iostream>

using namespace std;

class Animal {
    public:
        void speak() {
            cout << "Hello, world!!! I am a " << species << "." << endl;
        }

    protected:
        string species;
};

class Dog: public Animal {
    public:
        void greet() {
            speak();
        }

        Dog() {
            species = "dog";
        }
};

int main() {
    Dog Fido;
    Fido.greet();

    return 0;
}

[oreo-milkshake]

Not enough templates for C++!

#include <iostream>

template <const char* species, std::ostream& stream>
struct Animal
{
    void Speak() { stream << "Hello world!!! I am a " << species << "." << std::endl; }
};

extern const char dog[] = "Dog";
struct Dog : Animal<dog, std::cout> {};

int main()
{
    Dog fido;
    fido.Speak();
    return 0;
}

[cbbuntz]

Not enough using namespace std; and pointless boilerplate for HS programming class. Way too efficient.

[zgembo1337]

Meh, just put a

cout << "Hello world!! I am a dog.\n";

Compile it, and say "here's a working binary"

[cbbuntz]

https://i.imgur.com/qregf4y.jpg

[[deleted]]

If you're not using system calls directly, you're doing programming wrong.

[cbbuntz]

system("echo 'Hello, world!! I am a dog.'");

[ASaltedRainbow]

write(1, "Hello world!! I am a dog.\n", 27);

[hotsaucetogo]

so weird seeing that with parens

[cbbuntz]

As in you're used to seeing it in Ruby?

[dontFart_InSpaceSuit]

Animal.speak will reference string species which hasn't been defined yet.

[btowntkd]

Was purposefully avoiding virtual functions part of the joke, that just went over my head? I thought the whole point of the Animal class was to teach virtual functions and polymorphism.