Mixing C with C++

  • Thread starter Thread starter Guest
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G

Guest

Hi all,

Can an MFC C++ (VS 2005) project have .c files that contain C style
functions? Can these C functions use the classes created in the project?

RML
 
RML said:
Hi all,

Can an MFC C++ (VS 2005) project have .c files that contain C style
functions?
Click to expand...

What exactly are C-style functions? You can write free functions (i.e.
functions not bound to a class) in C++ just as in C. In any case, yes, you
can have C files in a C++ project.
Can these C functions use the classes created in the
project?
Click to expand...

C functions cannot access classes since classes aren't part of the C
language. Free functions written in C++ can access classes, of course.

-cd
 
When I add a .c file to my project, it failed the compile "wants me to
include stdafx.h. When I do this it fails the compile with this error.

Error 1 fatal error C1853: 'WinSystemsEPXC3 (x86)\Debug/AutoABTester.pch'
precompiled header file is from a previous version of the compiler, or the
precompiled header is C++ and you are using it from C (or vice
versa) d:\dev\Wabtec\WinCE-AutoAB-Tester\AutoABTester\AutoABTester\TestC.c 1

How do I get this c file to compile?
 
RML said:
When I add a .c file to my project, it failed the compile "wants me
to
include stdafx.h. When I do this it fails the compile with this
error.

Error 1 fatal error C1853: 'WinSystemsEPXC3
(x86)\Debug/AutoABTester.pch'
precompiled header file is from a previous version of the compiler,
or the
precompiled header is C++ and you are using it from C (or vice
versa)
d:\dev\Wabtec\WinCE-AutoAB-Tester\AutoABTester\AutoABTester\TestC.c
1

How do I get this c file to compile?
Click to expand...

By removing the "Use precompiled headers" option for that particular
file.

Note that the project properties allows individual settings for each
file.


Bo Persson
 
RML said:
When I add a .c file to my project, it failed the compile "wants me to
include stdafx.h. When I do this it fails the compile with this error.

Error 1 fatal error C1853: 'WinSystemsEPXC3 (x86)\Debug/AutoABTester.pch'
precompiled header file is from a previous version of the compiler, or the
precompiled header is C++ and you are using it from C (or vice
versa) d:\dev\Wabtec\WinCE-AutoAB-Tester\AutoABTester\AutoABTester\TestC.c 1

How do I get this c file to compile?
Click to expand...
[snip}

Remove "Using pre-compiled headers" from the Properties of this file.
Or, try compiling at C++ by changing the Properties to "Compile as C++."

David Wilkinson
 
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