CCS: where can select C or Cplusplus compiler in CCS?

yanzhen fu

Other Parts Discussed in Thread: MOTORWARE

Tool/software: Code Composer Studio

hi:

I met a problem in ccs configurate , when I want use bool type ,but show I can't , reasion is "bool" just can be use in C . not Cplusplus . where can i set this?

thanks !

best regard!

hunk

over 7 years ago

0 George Mock over 7 years ago

TI__Guru**** 252800 points

yanzhen fu said:
reasion is "bool" just can be use in C

That is incorrect. bool is a built-in type in C++, just like int. It is not a built-in type for C. What is typically done in C is #include <stdbool.h>, then use bool just like any other type. In fact, the code you show above is from the header file <stdbool.h> . I'm not sure why you show it.

Thanks and regards,

-George

0 yanzhen fu over 7 years ago in reply to George Mock

Genius 4005 points

hi George:
Maybe I didnot explaine clearly .

when I create a new project in ccs . when i want use "bool" type variable . in the end I can not pass the complier . at that time , I fine <stdbool.h> had comment define "bool " . so I want to ask how can un-conmment it ?
I do not fine the ways to" pre-" or " non" __cplusplus.
please help!

best regard

0 George Mock over 7 years ago in reply to yanzhen fu

TI__Guru**** 252800 points

The macro __cplusplus is predefined by the compiler. If the code being compiled is C++, then this symbol is defined and has a non-zero value. Otherwise, it is not defined. At the same time, the keyword bool is not defined for C, but it is defined for C++.

So, this test from stdbool.h ...

#ifndef __cplusplus

is true when C code is being compiled, false otherwise.

How does the compiler know when the source code is C++? Under most circumstances, the file extension controls it. If the file extension is .cpp, then the code is C++. If the file extension is .c, then the code is C.

Thus, when C code is being compiled, that code in stdbool.h creates a definition for bool that can be used in C code. When C++ code is being compiled, that code does nothing.

Thanks and regards,

-George

0 yanzhen fu over 7 years ago in reply to George Mock

Genius 4005 points

hi George :
As you said , whether it is c or c++ , the bool both can be use . but why my editor show non- defined? (you can see above)

on the other way , I imported motorware from ti, in some examples , I can create bool type , and stdbool.h has define bool type.

please help me why I can't use bool type when i create a project my own.

best regard .
hunk

0 yanzhen fu over 7 years ago in reply to yanzhen fu

Genius 4005 points

0 George Mock over 7 years ago in reply to yanzhen fu

TI__Guru**** 252800 points

If this is C code, and you #include <stdbool.h>, then I don't know why you would have an error. If that is what you experience, then I need a test case which allows me to reproduce the same behavior. Please submit one as described in How to Submit a Compiler Test Case.

Thanks and regards,

-George

0 Archaeologist over 7 years ago in reply to yanzhen fu

TI__Guru* 84285 points

Are you getting an error from the compiler, or from the code editor? Please show us the exact text of the error message.

0 yanzhen fu over 7 years ago in reply to Archaeologist

Genius 4005 points

this is main.app

4744.main.rar

please help ,

hunk

best regard

0 George Mock over 7 years ago in reply to yanzhen fu

TI__Guru**** 252800 points

I tried to make it clear that, to use bool in C code, you have to use this header file

#include <stdbool.h>

The source file you sent doesn't. When I add it, it builds clean.

Thanks and regards,

-George

0 yanzhen fu over 7 years ago in reply to George Mock

Genius 4005 points

thanks .
before , I "ctrl+ "bool"" click . it can jump to "stdbool.h" . so i think i have add t#include " stdbool.h"

but any way , very thanks !

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CCS: where can select C or Cplusplus compiler in CCS?