Why does VS2010 give syntax errors when syntax is correct?

I am having a problem with VS2010 (and VS2008) giving my a great list of syntax errors. However, the syntax is indeed correct. Here is a small example;

I have the following code block inside a .h file

// Prototype Declarations
LIST*   createList     (int (*compare) (void*, void*));
LIST*   destroyList    (LIST* plist);
int     addNode      (LIST* pList, void* dataInPtr);
bool    removeNode      (LIST* pList, void* keyPtr, void** dataOutPtr);
bool    searchList      (LIST* pList, void* pArgu, void** pDataOut);
bool    retrieveNode    (LIST* pList, void* pArgu, void** dataOutPtr);
bool    traverse        (LIST* pList, int fromWhere, void** dataOutPtr);
int     listCount    (LIST* pList);
bool    isListEmpty     (LIST* pList);
bool    isListFull      (LIST* pList);

LIST is a typedef'd struct, FYI. All of these function declarations appear to be correct syntax. Yet, when attempting to build, I get the following syntax errors starting at the first bool function, going down the list.

Error 2 error C2059: syntax error : ';'

I'm failing to see where the problem lies. Again, this is just a small example. I also receive syntax errors such as the following

bool found;

Error 29 开发者_开发知识库 error C2065: 'bool' : undeclared identifier

I'm truly at a lost on this one. The code posted here isn't my own, it's from a data structures book, but again it looks correct. Any help would be appreciated. Thanks!

bool is not a fundamental type in C.

Visual C++ only implements C90, which has no bool type. C99 added support for bool via the <stdbool.h> header, but Visual C++ does not support this.

You should either use int or create your own typedef for bool.

Check the file extension of the file including that header.

Visual Studio will automatically compile .c files as C rather than C++ if you don't tell it to do any differently (in the project settings).

Visual Studio's "C" support is... interesting - to my understanding it is in fact C89 rather than C99, and you can't just flick a switch to get C99. C89/C99 aside, bool is not a builtin type in C.

You can rename all your files to .cpp to compile them as C++, or modify the project settings to force compilation as C++ for every .c/.cpp/.cc file in the project.