Thread: question about bool

hello guys,
i have got a question about the bool data type. is the 'bool' datatype comes under 'C' datatypes. well, it might be a stupid question, i dont no. the thing i ask u about this b'cose, on the other day i used bool on DEV -C++ compiler which actually at the end should me an error telling me bool is undefined datatype. but i remember that i have used 'bool' which actually worked with some other compiler. but i cant remember whcih compiler it is. it is a along time i have used that compiler.

ssharish2005

bool is a basic type under C++ (bool, true, and false are reserved keywords in C++). In C99, a similar functionality is emulated using a set of macros and other things. Earlier versions of C did not include a bool type.

C99 refers to a particular standard of C. C89 is the standard the majority of compilers uses though many are moving towards C99 conformance. I'm sure searching the board would yield plenty of information

thax very much
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bool is a basic type under C++ (bool, true, and false are reserved keywords in C++). In C99, a similar functionality is emulated using a set of macros and other things. Earlier versions of C did not include a bool type.
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if this is the case, can u point some compiler which actualy support 'bool' data type. i think the dev-c++ dont though its a new compiler

ssharish

Dev C++ is based on gcc (the Gnu Compiler Collection). Gnu C++ compilers have supported the bool type since the early to mid 1990s.

If you compile source as C code, which is the default for files with a ".c" extension, there is a good chance that it will not support the bool type (unless you opt for 1999 C standard compliance).

With C99 the keyword _Bool was introduced (among others). And there is a macro in stdbool.h called bool which expands to _Bool.

It's propably a good idea to include stdbool.h, because even if your compiler does not support C99 it's still very likely that it has the stdbool.h (older non-C99 versions of gcc had it).