What is BOOL datatype in C99

[AmberJain]

What is BOOL datatype in ANSI C99? I expect it to be related with BOOLEAN.
I searched internet for it but ended with information of no use.
Looking for an detailed description of BOOL........... .....


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Is there any ANSI C99 based compiler for download from internet?


THANKS.........

[weaknessforcats]

Let me know what you find out. I thought BOOL was a Microsoft typedef of an unsigned int. You were you test it a TRUE or FALSE since it could contain numbers other than 0 or 1.

FALSE is:

#define FALSE 0

and TRUE is:

#define TRUE !FALSE

[AmberJain]

Let me know what you find out. I thought BOOL was a Microsoft typedef of an unsigned int. You were you test it a TRUE or FALSE since it could contain numbers other than 0 or 1.

FALSE is:

#define FALSE 0

and TRUE is:

#define TRUE !FALSE

I'm presently referring to the book-------->

Computer Fundamentals and Programming in C
By : PRADIP DEY and MANAS ghosh
OXFORD university press

In this book, on page-205 , it is mentioned that-
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"A complete list of possible data types is as:

bool (according to C99)
char
unsigned char
signed char
int
unsigned int
signed int
short int
unsigned short int
signed short int
long int
signed long int
unsigned long int
float
double
long double
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I couldnot find (probably) anything else about it in that book as it is based on ANSI C89 (probably).
That's it. All that I know about BOOL presently is this. Any help in this matter is welcomed....... ......

~~THANKS~~

[weaknessforcats]

There is a difference between BOOL and bool. I mean, a visual difference.

In C++ bool is a type that contains true or false:

bool var = true;
 
if (var == false)
{
etc....
 

[AmberJain]

There is a difference between BOOL and bool. I mean, a visual difference.

In C++ bool is a type that contains true or false:

bool var = true;
 
if (var == false)
{
etc....
 

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That's fine........
But I need to ask two things :
1. Whether bool datatype works in C (not C++) or not.
2. Whether bool datatype works fine even with ANSI C89 compilers.

THANKS

[weaknessforcats]

bool does not exist in C89 as a datatype.

That's why the BOOL macro exists.

I don't know about C99. Did you try it??

[Banfa]

The bool type is in the C99 standard (copied from C++) and I would hope by now most C99 compilers support it (back in 2001-2002 many supposedly C99 compilers didn't).

Surprisingly C99 is not terribly popular, if a project is written in C as opposed to C++ then it tends to be C89 still.

[AmberJain]

bool does not exist in C89 as a datatype.

That's why the BOOL macro exists.

I don't know about C99. Did you try it??

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Thanks......... ............... ..
No, I didn't tried it. I'm a student and am still learning C programming (let me tell you that I don't know still to program in C++). I'm using a C89 compiler. I just encountered it (the term "bool") in the book I mentioned above and just out of curiosity I posted this question.

THANKS ONCE AGAIN..........

[AmberJain]

The bool type is in the C99 standard (copied from C++) and I would hope by now most C99 compilers support it (back in 2001-2002 many supposedly C99 compilers didn't).

Surprisingly C99 is not terribly popular, if a project is written in C as opposed to C++ then it tends to be C89 still.

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THANKS......... ..

Can you tell me the name (and download site) of a C99 based compiler.

[Banfa]

Can you tell me the name (and download site) of a C99 based compiler.

I believe GNU g++ is C99 compatible with the correct compiler switches although there are some gaps in its implementation.

Microsoft does not have particular good support for C99, you can find more information on the Wikipedia C page