C Vs C++

MattB

Expert 2025 points

Hi,

We're starting a new embedded project using a C6455 and C6747.

Some parts of this project will be firmly rooted in C:

* DSP/BIOS is C (headers need to be extern "C")

* We will be generating code from MATLAB/Simulink/RTW which is basically C (although there is a C++ option which I think just sorts out the declarations)

* The programmers here are C programmers and have no real C++ experience

Are there are disadvantages to making the source modules .cpp even if we don't write much code that is actually C++?

The only disadvantage that I can think of is that we might need a few 'extern "C"'s.

Could the compiler output be affected by compiling as C or C++?

Thanks,

Matt

over 15 years ago

0 MattB over 15 years ago

Expert 2025 points

Oh and...

I'm expecting to have various C++ features (exceptions, RTTI) turned off in the options.

0 Ki over 15 years ago in reply to MattB

TI__Guru**** 463961 points

Hi Matt,

I can't say I know too much about the topic myself but there is a topic on C++ support in the TI compiler that may be a good starting point. There is also a category for C++ that has a several other topics of interest.

Thanks

0 MattB over 15 years ago in reply to Ki

Expert 2025 points

Ki-Soo Lee said:
I can't say I know too much about the topic myself but there is a topic on C++ support in the TI compiler that may be a good starting point.

Yeah, I had seen topic on C++ support in the TI compiler but your comment made me read it again with a clearer focus! Thanks!

It doesn't explicitly say anything about compiling C as C++ (which I think is pretty much what we would be doing here) but it does say that some C++ features have no performance penalty. I think this answers my question.

I'm going to start calling my source files .cpp, add 'extern "C"' to DSP/BIOS callbacks and see what happens!

Thanks,

Matt

Code Composer Studio™︎

Code Composer Studio forum

C Vs C++