不知道怎么学VC了，又是一个链接错误，请帮忙

[horizon2003]

可能是因为头文件的原因，在产生目标代码的时候出现216个两个目标文件的链接错误
Compiling...
Table.cpp
Generating Code...
Compiling...
MainFrm.cpp
Generating Code...
Linking...
Table.obj : error LNK2005: "int (* S_LockMatrix)[6]" (?S_LockMatrix@@3PAY05HA) already defined in MainFrm.obj

头文件我已经用下面语句处理了
ifndef ...
def...
endif
另外，project/setting里面，我也链接了需要的lib文件。
不知道是什么原因，请帮忙，谢谢！

[icer202]

你编译的文件中是否有其自己的include？如果有将include加入到工程中的
tools－》options－》directories中试试看～

[fuxf]

重复使用了预定义

[wanglh]

你看看这个函数在table.cpp和mainfrm是否重复定义了。

[horizon2003]

我好像没有重定义吧
table.h:
#include "\CoBase\include\head.h"
#include "\CoBase\include\shadowmap.h"
#include "DBInterface.h"

MainFrm.cpp
#include "Table.h"

这没有重复定义啊。并且，如果我把
"\CoBase\include\head.h"， "\CoBase\include\shadowmap.h"，"DBInterface.h"直接包含在MainFrm.cpp的话，他们之间不会相互包含，没有问题。而且，如果是一般的相互包含的话，不会是在目标文件obj链接的时候出错，而是会有一个redefinition...

[horizon2003]

还有三个warning，不知道又没有关系：
LINK : warning LNK4098: defaultlib "mfc42.lib" conflicts with use of other libs; use /NODEFAULTLIB:library
LINK : warning LNK4098: defaultlib "mfcs42.lib" conflicts with use of other libs; use /NODEFAULTLIB:library
LINK : warning LNK4098: defaultlib "msvcrt.lib" conflicts with use of other libs; use /NODEFAULTLIB:library

[red-fly]

LINK : warning LNK4098: defaultlib "mfc42.lib" conflicts with use of other libs; use /NODEFAULTLIB:library
LINK : warning LNK4098: defaultlib "mfcs42.lib" conflicts with use of other libs; use /NODEFAULTLIB:library
LINK : warning LNK4098: defaultlib "msvcrt.lib" conflicts with use of other libs; use /NODEFAULTLIB:library
把這三個lib加入到option->setting->lib中即可解決此warning

至於你的錯誤，是你重復定義了，如果是全局的，則注意要防止重復定義，如果可以不用全局的，則最好不用全局的函數或變量而變成某個類內的成員，

[red-fly]

不知道怎么学VC:
堅持下去，有一天你學會了VC，你會發現，其它的語言都　是如此的不堪一擊！
VC的強大，另你為所欲為，另你獲得新生！

[tjandy]

rebuild all 了吗？

[tjandy]

把obj全删除，再重新rebuild all

[horizon2003]

删了所有obj，然后rebuild all，还是不行

编译结果的最后一行是这样的：
Debug/Test.exe : fatal error LNK1169: one or more multiply defined symbols found。
Error executing link.exe.

[ISunwu]

One of the following may be a cause:

1、The most common cause of this error is accidentally linking with both the single-threaded and multithreaded libraries. Ensure that the application project file includes only the appropriate libraries and that any third-party libraries have appropriately created single-threaded or multithreaded versions.

2、The given symbol was a packaged function (created by compiling with /Gy) and was included in more than one file but was changed between compilations. Recompile all files that include the symbol.

3、The given symbol was defined differently in two member objects in different libraries, and both member objects were used.

4、An absolute was defined twice, with a different value in each definition.
注意第3、4点。