Thread: OOPs, I did it again.... lol....

  1. 11-18-2005 #31
    Shamino
    Shamino is offline
    Absent Minded Programmer
    Join Date
    May 2005
    Posts
    968
    Code:
    #include <iostream>
#include <vector>

class Animal
{
public:

	virtual void Movement()
	{
	}
	virtual void Eat()
	{
	}

};

class Mammals : public Animal
{
public:
		void Movement()
	{
		cout << "I use my legs!" << endl;
	}
		void Eat()
	{
		cout << "I eat anything I can find!" << endl;
	}
};

class Reptiles : public Animal
{
public:
		 void Movement()
	{
		cout << "I use my legs and slither!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
};

class Birds : public Animal
{
public:
		void Movement()
	{
		cout << "I fly for the most part, some of the oddballs walk!" << endl;
	}
	    void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}

};

class Amphibians : public Animal
{
public:
		void Movement()
	{
		cout << "I generally crawl with my legs, and slither, AND swim!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
};

class Fishes : public Animal
{
public:
		void Movement()
	{
		cout << "You guessed it, I swim! (some of us get beached though, stupid fat whales!)" << endl;
	}
		 void Eat()
	{
		cout << "I eat anything I can find in the water!" << endl;
	}
};

void operateAnimals(vector<Animal*> Animals)
{
	for(int i=0; i<Animals.size(); i++)
	{
		//This is where the interesting stuff happens:
		Animals[i]->Movement(); 
		Animals[i]->Eat();
	}
}


int main()
{
	Animal allAnimals;
	Mammals Mammal;
	Reptiles Reptile;
	Birds Bird;
	Amphibians Amphibian;
	Fishes Fish;

	vector<Animal*> Animals;
	Animals.push_back(&Mammals);
	Animals.push_back(&Reptile);
	Animals.push_back(&Bird);
	Animals.push_back(&Bird);
	Animals.push_back(&Amphibian);
	Animals.push_back(&Fish);

	operateAnimals(Animals);

	return 0;
}

    Lotsa errors, here they are, when i make it include <iostream> couts and stuff are undeclared, and it seems that it isnt taking vector either?

    Code:
    --------------------Configuration: Practice with OOP - Win32 Debug--------------------
Compiling...
Practice.cpp
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(22) : error C2065: 'cout' : undeclared identifier
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(22) : error C2297: '<<' : illegal, right operand has type 'char [15]'
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(22) : error C2065: 'endl' : undeclared identifier
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(26) : error C2297: '<<' : illegal, right operand has type 'char [27]'
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(83) : error C2065: 'vector' : undeclared identifier
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(83) : error C2059: syntax error : '>'
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(84) : error C2143: syntax error : missing ';' before '{'
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(84) : error C2447: missing function header (old-style formal list?)
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(103) : error C2059: syntax error : '>'
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(104) : error C2065: 'Animals' : undeclared identifier
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(104) : error C2228: left of '.push_back' must have class/struct/union type
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(104) : error C2275: 'Mammals' : illegal use of this type as an expression
        c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(17) : see declaration of 'Mammals'
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(105) : error C2228: left of '.push_back' must have class/struct/union type
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(106) : error C2228: left of '.push_back' must have class/struct/union type
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(107) : error C2228: left of '.push_back' must have class/struct/union type
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(108) : error C2228: left of '.push_back' must have class/struct/union type
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(109) : error C2228: left of '.push_back' must have class/struct/union type
c:\documents and settings\jonathan\my documents\c++ programming\opengl with nehe\nehe tutorials\practice with oop\practice.cpp(111) : error C2065: 'operateAnimals' : undeclared identifier
Error executing cl.exe.

Practice with OOP.exe - 18 error(s), 0 warning(s)
  2. 11-18-2005 #32
    Shamino
    Shamino is offline
    Absent Minded Programmer
    Join Date
    May 2005
    Posts
    968
    Fixed it!

    Code:
    #include <iostream>
#include <vector>

using namespace::std;

class Animal
{
public:

	virtual void Movement()
	{
	}
	virtual void Eat()
	{
	}

};

class Mammals : public Animal
{
public:
		void Movement()
	{
		cout << "I use my legs!" << endl;
	}
		void Eat()
	{
		cout << "I eat anything I can find!" << endl;
	}
};

class Reptiles : public Animal
{
public:
		 void Movement()
	{
		cout << "I use my legs and slither!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
};

class Birds : public Animal
{
public:
		void Movement()
	{
		cout << "I fly for the most part, some of the oddballs walk!" << endl;
	}
	    void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}

};

class Amphibians : public Animal
{
public:
		void Movement()
	{
		cout << "I generally crawl with my legs, and slither, AND swim!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
};

class Fishes : public Animal
{
public:
		void Movement()
	{
		cout << "You guessed it, I swim! (some of us get beached though, stupid fat whales!)" << endl;
	}
		 void Eat()
	{
		cout << "I eat anything I can find in the water!" << endl;
	}
};

void operateAnimals(vector<Animal*> Animals)
{
	for(int i=0; i<Animals.size(); i++)
	{
		//This is where the interesting stuff happens:
		Animals[i]->Movement(); 
		Animals[i]->Eat();
	}
}


int main()
{
	Animal allAnimals;
	Mammals Mammal;
	Reptiles Reptile;
	Birds Bird;
	Amphibians Amphibian;
	Fishes Fish;

	vector<Animal*> Animals;
	Animals.push_back(&Mammal);
	Animals.push_back(&Reptile);
	Animals.push_back(&Bird);
	Animals.push_back(&Amphibian);
	Animals.push_back(&Fish);

	operateAnimals(Animals);

	return 0;
}
    It works!
  3. 11-18-2005 #33
    Shamino
    Shamino is offline
    Absent Minded Programmer
    Join Date
    May 2005
    Posts
    968
    OMG this is amazing! I can keep narrowing the species and races down, the coding is SO easy now!

    I added a Dog class, that inherits mammals, which inherits Animal...

    I can now go from dog, to Terrier, hound, poodle

    down to Jack Russel Terrier, Coon Hound, Toy poodle!!!

    So now I can still use the animal class to access DOG! Freakin amazing!

    OOps, I've done it...

    End thread.

    Code:
    #include <iostream>
#include <vector>

using namespace::std;
/////////////////////////////////////
class Animal
{
public:
	virtual void Speak()
	{
	}
	virtual void Movement()
	{
	}
	virtual void Eat()
	{
	}
	virtual void Species()
	{
	}

};
/////////////////////////////////////


///////////////////////////////////////////////////////////////////////////////////////////////////////////////
class Mammals : public Animal
{
public:	
	
		void Movement()
	{
		cout << "I use my legs!" << endl;
	}
		void Eat()
	{
		cout << "I eat anything I can find!" << endl;
	}
		void Species()
	{
		cout << "I'm a Mammal!" << endl;
	}


};

class Reptiles : public Animal
{
public:

		 void Movement()
	{
		cout << "I use my legs and slither!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
		void Species()
	{
		cout << "I'm a Reptile!" << endl;
	}
};

class Birds : public Animal
{
public:

		void Movement()
	{
		cout << "I fly for the most part, some of the oddballs walk!" << endl;
	}
	    void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
		void Species()
	{
		cout << "I'm a Bird!" << endl;
	}

};

class Amphibians : public Animal
{
public:

		void Movement()
	{
		cout << "I generally crawl with my legs, and slither, AND swim!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
		void Species()
	{
		cout << "I'm an Amphibian!" << endl;
	}
};

class Fishes : public Animal
{
public:
		void Movement()
	{
		cout << "You guessed it, I swim! (some of us get beached though, stupid fat whales!)" << endl;
	}
		 void Eat()
	{
		cout << "I eat anything I can find in the water!" << endl;
	}
		void Species()
	{
		cout << "I'm a Fish!" << endl;
	}
};
//////////////////////////////////////////////////////////////////////////////////////////////////////////////


class Dogs :  public Mammals
{
public:
	void Speak()
	{
		cout << "Bark! Bark!" << endl;
	}
};

////////////////////////////////////////////////////////////
void operateAnimals(vector<Animal*> Animals)
{
	for(int i=0; i<Animals.size(); i++)
	{
		//This is where the interesting stuff happens:
		Animals[i]->Species();
		Animals[i]->Movement(); 
		Animals[i]->Eat();
		Animals[i]->Speak();
		cout << endl;

	}
}
////////////////////////////////////////////////////////////

int main()
{
	Animal allAnimals;
	Mammals Mammal;
	Reptiles Reptile;
	Birds Bird;
	Amphibians Amphibian;
	Fishes Fish;
	Dogs Dog;

	vector<Animal*> Animals;
	Animals.push_back(&Mammal);
	Animals.push_back(&Reptile);
	Animals.push_back(&Bird);
	Animals.push_back(&Amphibian);
	Animals.push_back(&Fish);
	Animals.push_back(&Dog);

	operateAnimals(Animals);
	return 0;
}
  4. 11-18-2005 #34
    Shamino
    Shamino is offline
    Absent Minded Programmer
    Join Date
    May 2005
    Posts
    968
    Example of a Simple Class Hierarchy!

    I think this is as object oriented as it gets, lets start from the bottom: We have Poodle, Poodle is a Dog, Dog is a Mammal, Mammal is an Animal.

    All animals have skin, can make noise, can move, can eat, and have a species, thus declared in the Animal class. We use like, ultra inheritence and polymorphism to define the poodle class, it inherits alot, and changes only a few things, very cool!

    Code:
    #include <iostream>
#include <vector>

using namespace::std;
/////////////////////////////////////
class Animal
{
public:
	virtual void Skin()
	{
	}
	virtual void Speak()
	{
	}
	virtual void Movement()
	{
	}
	virtual void Eat()
	{
	}
	virtual void Species()
	{
	}

};
/////////////////////////////////////


///////////////////////////////////////////////////////////////////////////////////////////////////////////////
class Mammals : public Animal
{
public:	
	
		void Movement()
	{
		cout << "I use my legs!" << endl;
	}
		void Eat()
	{
		cout << "I eat anything I can find!" << endl;
	}
		void Species()
	{
		cout << "I'm a Mammal!" << endl;
	}


};

class Reptiles : public Animal
{
public:

		 void Movement()
	{
		cout << "I use my legs and slither!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
		void Species()
	{
		cout << "I'm a Reptile!" << endl;
	}
};

class Birds : public Animal
{
public:

		void Movement()
	{
		cout << "I fly for the most part, some of the oddballs walk!" << endl;
	}
	    void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
		void Species()
	{
		cout << "I'm a Bird!" << endl;
	}

};

class Amphibians : public Animal
{
public:

		void Movement()
	{
		cout << "I generally crawl with my legs, and slither, AND swim!" << endl;
	}
		 void Eat()
	{
		cout << "I usually eat meat!" << endl;
	}
		void Species()
	{
		cout << "I'm an Amphibian!" << endl;
	}
};

class Fishes : public Animal
{
public:
		void Movement()
	{
		cout << "You guessed it, I swim! (some of us get beached though, stupid fat whales!)" << endl;
	}
		 void Eat()
	{
		cout << "I eat anything I can find in the water!" << endl;
	}
		void Species()
	{
		cout << "I'm a Fish!" << endl;
	}
};
//////////////////////////////////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////
class Dogs :  public Mammals
{
public:
	virtual void Skin()
	{
		cout << "I'm covered in fur!" << endl;
	}
	void Speak()
	{
		cout << "Bark! Bark!" << endl;
	}
};

////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////
class Poodles : public Dogs
{
public:
	void Skin()
	{
		cout << "My fur is long and curly!" << endl;
	}
};

////////////////////////////////////////////////////////////
void operateAnimals(vector<Animal*> Animals)
{
	for(int i=0; i<Animals.size(); i++)
	{
		//This is where the interesting stuff happens:
		Animals[i]->Species();
		Animals[i]->Movement(); 
		Animals[i]->Eat();
		Animals[i]->Speak();
		Animals[i]->Skin();
		cout << endl;

	}
}
////////////////////////////////////////////////////////////

int main()
{
	Animal allAnimals;
	Mammals Mammal;
	Reptiles Reptile;
	Birds Bird;
	Amphibians Amphibian;
	Fishes Fish;
	Dogs Dog;
	Poodles Poodle;

	vector<Animal*> Animals;
	Animals.push_back(&Mammal);
	Animals.push_back(&Reptile);
	Animals.push_back(&Bird);
	Animals.push_back(&Amphibian);
	Animals.push_back(&Fish);
	Animals.push_back(&Dog);
	Animals.push_back(&Poodle);

	operateAnimals(Animals);
	return 0;
}
    Sorry if I'm overposting, I feel like these examples can help anyone else with the question, Maybe we can get this moved onto a faq board? How woudl I go about doing that? I found this thread INCREDIBLY useful.


    I think I'm going to make a dynamic database for Taxonomy and actually allow the user to add in the family/phylum/genus/species/etcetcetc at will, to constantly increase the database and make it larger and larger and larger.

    For a practice project, ykno :d
    Last edited by Shamino; 11-18-2005 at 03:24 AM.
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