My naive suggestion would be to create a new project with precompiled headers disabled, then put in the code that you have written.
This is a discussion on calling C functions from C++ code within the C++ Programming forums, part of the General Programming Boards category; My naive suggestion would be to create a new project with precompiled headers disabled, then put in the code that ...
As I said, it's not really a choice because it's part of a larger project that uses the precompiled header. Some of the other code was written by somebody else.
Excluded from Build: (yes or no)
and the only category available is Configuration Properties, with subcategory General. Usually, to find the option to disable PCH, it's under a subcategory C/C++, which is not available unless I select the entire project. Am I missing something? Perhaps a specific Item Type?
Nevermind, I did a bit more research and found out about the Yc[filename] option. Let me try it out. Thanks.
Actually, that wasn't for what I thought it was. Yc[filename] is something else...
There should be a C/C++ category if you did it right.
Select a source file, right-click, select properties. You did that on a specific file, did you not? Not the solution or anything else?
For the record, /Yc and /Yu are used to use and create PCH; to not use them, you omit those options.
My c code uses math.h, but not cmath. I'll play around with this for a bit and see if I can get it to work. Thanks.Code:cmath(19): error C2061: syntax error : identifier 'acosf'
Found out about the relationship between cmath and math.h (they are basically, in a way, the same. No such thing as cmath.h)
This raises many questions about why I am getting all those syntax errors in cmath...
If you try to include the cmath header in a C file you will probably get quite a few errors. The cmath header file is not the same as math.h. The cmath header file probably includes some overloaded functions that are only available for use in C++. For example my cmath header file has several different abs() functions, one for double, one for float, and one for long doubles. Since C does not allow overloaded functions you would get several errors because of this. Also cmath includes a namespace declaration, and C does not use namespaces, another error.
So you should always use the proper C standard header for a C file, and the proper C++ standard header for a C++ file.
Last edited by jimblumberg; 02-16-2012 at 11:30 PM.
That makes perfect sense. I realized I was including iostream, which is a c++ library. That took away the cmath errors. Now I'm getting other errors, but they're with a different library I'm working with, so it's another story...
Where did you find "your" C code? Are there other files or functions that came with "your" C code? "Your" C code looks to me like it may be part of a larger code base meant to be used as a library, not necessarily a stand alone function.