Declaration syntax error when compiling

I am compiling a program for the Palm pilot using CodeWarrior v8, and writing the code in C. However: when I try to include header files with C++ "class" definitionsit gives me errors galore. I'm sure it's a simple #include statement or an #ifndef statement that I am missing, but trying those has done nothing. Here is some sample code that causes an error.

Filename: platform.h

#if !defined(__PLATFORM_H_INCLUDED)
#define __PLATFORM_H_INCLUDED

#include <PalmOS.h>
#include <FloatMgr.h>
//this files contains all data type declarations depending on the platform

#define DALP_EXPORT __declspec(dllexport)
#define DALP_IMPORT __declspec(dllimport)

// palm os platform
#define Dint Int32
#define Duint unsigned Int32
#define Dlong long
#define Ddouble FlpDouble
#define Dvoid void
#define Dchar char //Single byte character
#define Dbyte unsigned char
#define Dfalse false
#define Dtrue true
#define Dbool bool
#define Ddword unsigned long
#define Dnull NULL
#define NULL_LENGTH ((unsigned long) ~0)

// some macros that support other functions

#define lec2uint(A) (Dint) (((Dint) ((Dbyte) (A)[0])) +\
(((Dint) ((Dbyte) (A)[1])) << 8))

#define lec3uint(A) (Dint) (((Dint) ((Dbyte) (A)[0])) +\
(((Dint) ((Dbyte) (A)[1])) << 8) +\
(((Dint) ((Dbyte) (A)[2])) << 16))

#define lec4uint(A) (Dint) (((Dint) ((Dbyte) (A)[0])) +\
(((Dint) ((Dbyte) (A)[1])) << 8) +\
(((Dint) ((Dbyte) (A)[2])) << 16) +\
(((Dint) ((Dbyte) (A)[3])) << 24))

#define int2lec(T,A) { Duint def_temp= (Duint) (A) ;\
*((Dbyte*) (T))= (Dbyte)(def_temp); \
*((Dbyte*) (T+1))=(Dbyte)((def_temp >> 8)); }
#define int3lec(T,A) { \
*((T))=(Dbyte) ((A));\
*((T)+1)=(Dbyte) (((A) >> 8));\
*((T)+2)=(Dbyte) (((A) >> 16)); \
}
#define int4lec(T,A) { *(T)=(Dbyte) ((A));\
*((T)+1)=(Dbyte) (((A) >> 8));\
*((T)+2)=(Dbyte) (((A) >> 16));\
*((T)+3)=(Dbyte) (((A) >> 24)); }

//global functions
void fnGetExternalErrorMessageText(Dchar* pErrorMessage, Dchar* pszFunctionName);

class DalpMemStrRoutines{
public:
static Dchar* StringCopy( Dchar* pszDestination, const Dchar* pszSource);
static Dint StringLength(const Dchar *pszString);
static Dvoid* MemoryCopy(Dvoid* pDest, const Dvoid* pSrc, Dint nCount);
static Dvoid* MemorySet(Dvoid* pDest, Dint nChar, Dint nCount);};


#define DALP_D_ITOD(X) (_d_itod(X))
#define DALP_D_DTOI(X) (_d_dtoi(X))
#define DALP_D_DIV(X,Y) (_d_div(X,Y))
#define DALP_D_MUL(X,Y) (_d_mul(X,Y))

#define ASSERT(X) \
do {if (Dnull == X) ErrDisplayFileLineMsg(__FILE__, (UInt16) __LINE__, "Null Pointer passed as parameter");} while (0)

#define SOCKET_ERROR (-1)

#endif



The error that it gives upon compiling, when I #include platform.h in my source file is:
"Error: declaration syntax error
platform.h line 91 class DalpMemStrRoutines "

This is only the first of many errors, all of which seem to be a part of C++ (eg: it'll also complain about the next line after this error where "public:" is used)

Am I doing something obviously wrong?

Thank you for your help,
Nathan
(nbluvol@uwo.ca)

Turns out that it was the stupidest error ever! All the errors were because my files were with the ".c" extension and not ".cpp" (or whatever C++ extension tickles your fancy). As soon as I changed the files names: Voila! and it worked.