macOS BOOL not getting inherited in fresh install of Xcode

[mspman]

Okay, what am I doing wrong. I just installed Xcode on a friends MBA, and I'm having issues getting the "BOOL" datatype to be recognized. In the simplest of programs, "Hello World!", I'm importing stdio.h, and when I try to declare a BOOL, I get "Use of undeclared identifier BOOL."

What am I missing??

 

[Cromulent]

Okay, what am I doing wrong. I just installed Xcode on a friends MBA, and I'm having issues getting the "BOOL" datatype to be recognized. In the simplest of programs, "Hello World!", I'm importing stdio.h, and when I try to declare a BOOL, I get "Use of undeclared identifier BOOL."

What am I missing??

Sounds like you are writing a C program. BOOL is the Objective-C keyword. If you want to use a boolean in C code you need to either use the keyword bool (if you are happy using the C99 standard) or #define one yourself.

 

[Guiyon]

Okay, what am I doing wrong. I just installed Xcode on a friends MBA, and I'm having issues getting the "BOOL" datatype to be recognized. In the simplest of programs, "Hello World!", I'm importing stdio.h, and when I try to declare a BOOL, I get "Use of undeclared identifier BOOL."

What am I missing??

BOOL is not a C type, it is an Objective-C type. If you want to use it, you'll need to import and link the Foundation framework. If you are targeting the C99 standard, then there is a bool datatype (note the capitalization!) and, IIRC, you'll need to include the stdbool.h header to use it (this also defines true and false). You can also just typedef your own.

 

[mspman]

ARRRRGH!! That's it!

Thanks guys and sorry for the stupid question!