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57 changes: 57 additions & 0 deletions exercise/01/animal.cpp
Original file line number Diff line number Diff line change
@@ -0,0 +1,57 @@

#include "animal.h"

unsigned int insect::legs() const
{
return 6;
}


/////////////////////////////////////////////////////////////////////////
std::wstring cockroach::species() const
{
return L"cockroach";
}


/////////////////////////////////////////////////////////////////////////
unsigned int bird::legs() const
{
return 2;
}


/////////////////////////////////////////////////////////
std::wstring sparrow::species() const
{
return L"sparrow";
}


////////////////////////////////////////////////////////
unsigned int spider::legs() const
{
return 8;
}


////////////////////////////////////////////////////////
std::wstring tarantula::species() const
{
return L"tarantula";
}


//////////////////////////////////////////////////////////////////////////
std::wstring leg_counter::add_animal(const std::unique_ptr<animal> NewAnimal)
{
m_lLegCount += NewAnimal->legs();
return NewAnimal->species();
}


const unsigned int leg_counter::legs()
{
return m_lLegCount;
}

126 changes: 126 additions & 0 deletions exercise/01/animal.h
Original file line number Diff line number Diff line change
@@ -0,0 +1,126 @@
#pragma once

#include <string>


class animal
{
public:
virtual ~animal() = default;

virtual unsigned int legs() const = 0;
virtual std::wstring species() const = 0;
};

///////////////////////////////////////////////////
class insect : public animal
{
public:

unsigned int legs() const override;
};


//////////////////////////////////////////////////
class cockroach : public insect
{
public:

std::wstring species() const override;
};


//////////////////////////////////////////////////
class bird : public animal
{
public:

unsigned int legs() const override;
};


//////////////////////////////////////////////////
class sparrow : public bird
{
public:

std::wstring species() const override;
};



//////////////////////////////////////////////////
class spider : public animal
{
public:

unsigned int legs() const override;
};


///////////////////////////////////////////////////
class tarantula : public spider
{
public:

std::wstring species() const override;
};



//////////////////////////////////////////////////
enum animalID
{
eCockroach = 1,
eSparrow,
eTarantula
};


namespace
{
using namespace std;

unique_ptr<animal> animal_factory(int id)
{
switch (id)
{
case eCockroach:
{
return make_unique<cockroach>();
}

case eSparrow:
{
return make_unique<sparrow>();
}

case eTarantula:
{
return make_unique<tarantula>();
}

default:
{
return nullptr;
}
}
}
}


//////////////////////////////////////////////////
class leg_counter
{
public:
leg_counter() : m_lLegCount(0) {};
~leg_counter() = default;

std::wstring add_animal(const std::unique_ptr<animal> NewAnimal);
const unsigned int legs();

private:
unsigned int m_lLegCount;
};


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Original file line number Diff line number Diff line change
@@ -1,95 +1,96 @@
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