9E/13.1 dynamic_cast_Fish.cpp at main · learncppnow/9E · GitHub

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#include <iostream>

using namespace std;

class Fish

{

public:

virtual void Swim()

{

cout << "Fish swims in water" << endl;

}

// base class should always have virtual destructor

virtual ~Fish() {}

};

class Tuna: public Fish

{

public:

void Swim()

{

cout << "Tuna swims real fast in the sea" << endl;

}

void BecomeDinner()

{

cout << "Tuna became dinner in Sushi" << endl;

}

};

class Carp: public Fish

{

public:

void Swim()

{

cout << "Carp swims real slow in the lake" << endl;

}

void Talk()

{

cout << "Carp talked carp!" << endl;

}

};

void DetectFishType(Fish* objFish)

{

Tuna* objTuna = dynamic_cast <Tuna*>(objFish);

if (objTuna)

{

cout << "Detected Tuna. Making Tuna dinner: " << endl;

objTuna->BecomeDinner(); // calling Tuna::BecomeDinner

}

Carp* objCarp = dynamic_cast <Carp*>(objFish);

if(objCarp)

{

cout << "Detected Carp. Making carp talk: " << endl;

objCarp->Talk(); // calling Carp::Talk

}

cout << "Verifying type using virtual Fish::Swim()" << endl;

objFish->Swim(); // calling virtual function Swim

}

int main()

{

Carp myLunch;

Tuna myDinner;

DetectFishType(&myDinner);

cout << endl;

DetectFishType(&myLunch);

return 0;

}

9E/13.1 dynamic_cast_Fish.cpp at main · learncppnow/9E · GitHub

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