Why isn't bool a built-in type?

I was just wondering, why wasn't the bool type built-in to C++? That seems like it would've been a good idea.

It is AFAIK.

It is. It wasn't in C, however.

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It is AFAIK.

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Huh? What does that mean?

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It is. It wasn't in C, however.

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Really? Then why does my compiler give me an error whenever I use bool without including "bool.h"?

Because you are probably using a C compiler.

EDIT: Or perhaps a REALLY old C++ compiler?

As Far As I Know...

What compiler are you using? I think bool is somewhat new.

The copyrights on the compiler I use at home, MPW, are from 1985-1999. Is that the problem, then?

Yeah, most likely. You're best off getting a new compiler.

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Originally posted by Polymorphic OOP
Yeah, most likely. You're best off getting a new compiler.

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I'd like to, but MPW is the only free compiler available for Macs. Oh well. I'm hopefully *crosses fingers* getting a new computer soon. In that case, I'll run Linux on it, and I believe that Linux comes with gcc.

You can always define your own bool type ;) Some people will tell you to define true as 1 and false as 0. I don't know about that, this is how I do it.

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#define true ( 5 == 5 )
#define false ( !true )

typedef int bool;

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Thanks, but I already have a header file for bool:

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#ifndef BOOL_H
#define BOOL_H
#undef true
#undef false
const int true = 1;
const int false = 0;
typedef int bool;
#endif

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I was just complaining cuz I hafta include that in every program I write that uses boolean variables:rolleyes:

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Originally posted by MrWizard
You can always define your own bool type ;) Some people will tell you to define true as 1 and false as 0. I don't know about that, this is how I do it.

Code:

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#define true ( 5 == 5 )
#define false ( !true )

typedef int bool;

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yeah, i learned true as 1 and false as 0, binary...
you could do it that way, or another way, (I think this is right)

Code:

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enum bool {
      false, true
};

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I'm not sure if that is how you implement an enumerated type, not sure on syntax, I haven't worked with enum that much.

You might also try checking for updates to MPW.

Here's a link I found to apple.com that allows for downloading it. And the file is dated 2001.

ftp://ftp.apple.com/developer/Tool_C...MPW-GM_Images/

As for compilers... I even found a C compiler for the old Commodore computers. :D http://www.cc65.org/

Just return 1 for true and 0 for false, I think that is what a bool type would do anyway it would just be masked with words, or you could define them.

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#define FALSE 0
          #define TRUE !FALSE

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Thats has always worked for me and I am using a very old compiler.

Just return 1 for true and 0 for false, I think that is what a bool type would do anyway it would just be masked with words, or you could define them.

Code:

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#define FALSE 0
#define TRUE !FALSE

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Thats has always worked for me and I am using a very old compiler.