dev-cpp-users

[Dev-C++] enum

[Daniel G. <sp...@ho...>]

when you enumerate variables, is the first one (by default) 0 or 1 ?

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Re: [Dev-C++] enum

[Bob W. <bo...@ph...>]

Daniel;

  when you enumerate variables, is the first one (by default) 0 or 1 ?
Run this little program and you will get your answer.

#include <iostream.h>
#include <conio_mingw.h>
#include <stdio.h>
// #include <windows.h>
// #include <stdlib.h>
// #include <time.h>

enum {Dog,Cat,Horse,Pig};

int main (int argc, char *argv[])
{
    int i;
    for (i =3D Dog; i <=3D Pig; i++)
         std::cout << "i =3D " << i << std::endl;

    std::cout << "\n\nHit any key to close window . . .";
    while (!kbhit());
    return 0;
}

Re: [Dev-C++] enum

[Jason H. <jas...@bt...>]

The default is 0, and then each consequtive one is +1 the previous one. =
You can change the value of an enum by initialising it to something =
else, i.e.

enum farmyard {cow, sheep, pig, chicken, fruitbat =3D 1000, elephant, =
pigmi}

so cow =3D 0, sheep =3D 2, etc.. and then fruitbat =3D 1000, elephant =
=3D 1001, and so on.

Jason.
  ----- Original Message -----=20
  From: Bob Wilson=20
  To: Dev-C++ User Mailing List=20
  Sent: Wednesday, April 17, 2002 1:02 PM
  Subject: Re: [Dev-C++] enum


  Daniel;

    when you enumerate variables, is the first one (by default) 0 or 1 ?
  Run this little program and you will get your answer.

  #include <iostream.h>
  #include <conio_mingw.h>
  #include <stdio.h>
  // #include <windows.h>
  // #include <stdlib.h>
  // #include <time.h>

  enum {Dog,Cat,Horse,Pig};

  int main (int argc, char *argv[])
  {
      int i;
      for (i =3D Dog; i <=3D Pig; i++)
           std::cout << "i =3D " << i << std::endl;

      std::cout << "\n\nHit any key to close window . . .";
      while (!kbhit());
      return 0;
  }

RE: [Dev-C++] enum

[Ioannis V. <no...@ho...>]

A more ANSI C++ compliant code would be:
 
#include <iostream>
#include <cstdlib>
 

int main ()
{
 using std::cout;
 using std::endl;
 using std::system;
 
 enum {Dog,Cat,Horse,Pig};
 
 int i;
    
 for (i = Dog; i <= Pig; i++)
     cout << "i = " << i << endl;
 
 
 system("pause");
 
 return 0;
}
 
 
or check the comments i have placed in your code.
 
 
Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
<http://www.noicys.cjb.net/> 
* Alternative URL: http://run.to/noicys

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Bob
Wilson
Sent: Wednesday, April 17, 2002 3:03 PM
To: Dev-C++ User Mailing List
Subject: Re: [Dev-C++] enum


Daniel;
 

when you enumerate variables, is the first one (by default) 0 or 1 ?

Run this little program and you will get your answer.
 
#include <iostream.h> 
 

#include <iostream>

 
 
#include <conio_mingw.h> 
 

Not portable.

 
 
#include <stdio.h> 
 

Not needed.

 
 
// #include <windows.h> 
 

Header file for system extensions. Non needed.

 
 
// #include <stdlib.h> 
 
 
// #include <time.h> 
 

Not needed.

 
 
enum {Dog,Cat,Horse,Pig};
 
int main (int argc, char *argv[])
{
    int i;
    for (i = Dog; i <= Pig; i++)
         std::cout << "i = " << i << std::endl;
 
    std::cout << "\n\nHit any key to close window . . .";
 
     while (!kbhit()); 

 Not needed system extension.

 
    return 0;
}
 
 
 

Re: [Dev-C++] enum

[Bob W. <bo...@ph...>]

MessageI've been think about this, and isn't the call to =
system("pause"); a windows specific call and as such would not be =
portable to UNIX or any other operating system?

Regards,

Bob

  A more ANSI C++ compliant code would be:

  #include <iostream>
  #include <cstdlib>


  int main ()
  {
   using std::cout;
   using std::endl;
   using std::system;
  =20
   enum {Dog,Cat,Horse,Pig};

   int i;
     =20
   for (i =3D Dog; i <=3D Pig; i++)
       cout << "i =3D " << i << endl;
  =20
  =20
   system("pause");
  =20
   return 0;
  }
  =20

  or check the comments i have placed in your code.


  Ioannis

RE: [Dev-C++] enum

[Ioannis V. <no...@ho...>]

Yes, the pause argument is system depedent, but the system() function
can be found to any system. You simply change "pause" to the correct
command of any system. I would do the following:
 
// system extension encapsulated under a portable interface
void pause()
{
 system("pause");
// or sleep() or whatever
}
 
 
 
Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
<http://www.noicys.cjb.net/> 
* Alternative URL: http://run.to/noicys

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Bob
Wilson
Sent: Thursday, April 18, 2002 4:08 PM
To: Dev-C++ User Mailing List
Subject: Re: [Dev-C++] enum


I've been think about this, and isn't the call to system("pause"); a
windows specific call and as such would not be portable to UNIX or any
other operating system?
 
Regards,
 
Bob
 

A more ANSI C++ compliant code would be:
 
#include <iostream>
#include <cstdlib>
 


int main ()
{
 using std::cout;
 using std::endl;
 using std::system;
 
 enum {Dog,Cat,Horse,Pig};
 
 int i;
    
 for (i = Dog; i <= Pig; i++)
     cout << "i = " << i << endl;
 
 
 system("pause");
 
 return 0;
}
 
 
or check the comments i have placed in your code.
 
 
Ioannis

RE: [Dev-C++] enum

[Ioannis V. <no...@ho...>]

0


Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
* Alternative URL: http://run.to/noicys


> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Daniel Glenfield
> Sent: Wednesday, April 17, 2002 1:04 PM
> To: dev...@li...
> Subject: [Dev-C++] enum
> 
> 
> when you enumerate variables, is the first one (by default) 0 or 1 ?
> 
> _________________________________________________________________
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