• Jean Cesar (93/93) Feb 16 2017 I have the following code in c++ using polymorphism how would I
• =?UTF-8?Q?Ali_=c3=87ehreli?= (85/87) Feb 16 2017 import std.stdio;

Jean Cesar <jeanzonta777 yahoo.com.br> writes:

I have the following code in c++ using polymorphism how would I 
convert D-language polymorphism?
#include <cstdlib>
#include <iostream>

class Mamifero
{
  protected:
    int idade;

  public:
    Mamifero(){}
    ~Mamifero(){}

    virtual void somMamifero() const
    {
      std::cout<<"\n\tSom de mamifero.\n";
   }
};

class Boi: public Mamifero
{
  public:
    void somMamifero() const
    {
     std::cout<<"\n\tMuu ..! Muu..!!\n";
    }
};

class Gato: public Mamifero
{
  public:
    void somMamifero() const
    {
     std::cout<<"\n\tMiAu ..! MiAu..!!\n";
    }
};

class Porco: public Mamifero
{
  public:
    void somMamifero() const
    {
     std::cout<<"\n\tOinc ..! Oinc..!!\n";
    }
};

class Cachorro: public Mamifero
{
  public:
    void somMamifero() const
    {
     std::cout<<"\n\tAu ..! Au..!!\n";
    }
};

int main()
{
   Mamifero* mamPtr;
   int op;
   while(op != 5)
   {
     std::cout<<"\n\t(1) Boi"
              <<"\n\t(2) Gato"
              <<"\n\t(3) Porco"
              <<"\n\t(4) Cachorro"
              <<"\n\t(5) Sair"
	     <<"\n\tDigite: ";
      std::cin>>op;
    switch(op)
     {
      case 1:{
        mamPtr = new Boi();
        mamPtr->somMamifero();
        break;
       }
      case 2:{
        mamPtr = new Gato();
        mamPtr->somMamifero();
        break;
       }
      case 3:{
        mamPtr = new Porco();
        mamPtr->somMamifero();
        break;
       }
      case 4:{
        mamPtr = new Cachorro();
        mamPtr->somMamifero();
        break;
       }
      case 5:{
        std::cout<<"\n\tGood Bye\n\n";
        exit(0);
        break;
       }
      default:
        std::cout<<"\n\tOpção Inválida ..!!!\n";
     }
   }
}

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 02/16/2017 11:09 AM, Jean Cesar wrote:
 I have the following code in c++ using polymorphism how would I convert
 D-language polymorphism?

import std.stdio;

class Mamifero {
     int idade;

     void somMamifero() {
         writeln("\n\tSom de mamifero.");
     }
}

class Boi: Mamifero
{
     override void somMamifero() const
     {
         writeln("\n\tMuu ..! Muu..!!");
     }
}

class Gato: Mamifero
{
     override void somMamifero() const
     {
         writeln("\n\tMiAu ..! MiAu..!!");
     }
}

class Porco: Mamifero
{
     override void somMamifero() const
     {
         writeln("\n\tOinc ..! Oinc..!!");
     }
}

class Cachorro: Mamifero
{
     override void somMamifero() const
     {
         writeln("\n\tAu ..! Au..!!");
     }
}

void main()
{
     Mamifero mamPtr;
     int op;
     while(op != 5)
     {
         write("\n\t(1) Boi" ~
               "\n\t(2) Gato" ~
               "\n\t(3) Porco" ~
               "\n\t(4) Cachorro" ~
               "\n\t(5) Sair" ~
               "\n\tDigite: ");
         readf(" %s", &op);
         switch(op)
         {
         case 1:{
             mamPtr = new Boi();
             mamPtr.somMamifero();
             break;
         }
         case 2:{
             mamPtr = new Gato();
             mamPtr.somMamifero();
             break;
         }
         case 3:{
             mamPtr = new Porco();
             mamPtr.somMamifero();
             break;
         }
         case 4:{
             mamPtr = new Cachorro();
             mamPtr.somMamifero();
             break;
         }
         case 5:{
             writeln("\n\tGood Bye");
             return;
         }
         default:
             writeln("\n\tOpção Inválida ..!!!");
         }
     }
}

In D you can have interfaces as well:

interface Mamifero {
     void somMamifero();
}

Ali