请教一个obj问题

[markov_max]

环境MFC6.0
程序编译后出现以下显示：
HRadarDlg.obj : error LNK2005: "int volatile g_bSwitch" (?g_bSwitch@@3HC) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "int HJIValue" (?HJIValue@@3HA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "int chuliPtr" (?chuliPtr@@3HA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "short recvPtr" (?recvPtr@@3FA) already defined in HRadar.obj

程序结构是基于一个对话框的程序，以上数据定义在另外一个.h文件中，被包含在HRadar.h中。
请问是什么原因出现error!!谢谢！

[bobob]

rebuild all以下，然后再看
有问题贴出来

[markov_max]

rebuild all以后的：

Deleting intermediate files and output files for project 'HRadar - Win32 Debug'.
--------------------Configuration: HRadar - Win32 Debug--------------------
Compiling resources...
Compiling...
StdAfx.cpp
Compiling...
BMPButton.cpp
HRadar.cpp
HRadarDlg.cpp
E:\vcwork\HRadar\HRadarDlg.cpp(401) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(402) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(403) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(404) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(408) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(409) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(410) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(411) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(445) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(446) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(449) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(450) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(453) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(454) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(471) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(472) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(475) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(476) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(479) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(480) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(483) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(484) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(487) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(488) : warning C4244: '=' : conversion from 'float' to 'int', possible loss of data
E:\vcwork\HRadar\HRadarDlg.cpp(1156) : warning C4244: '=' : conversion from 'unsigned int' to 'float', possible loss of data
InfoTip.cpp
Generating Code...
Linking...
HRadarDlg.obj : error LNK2005: "int volatile g_bSwitch" (?g_bSwitch@@3HC) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "int HJIValue" (?HJIValue@@3HA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "int chuliPtr" (?chuliPtr@@3HA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "short recvPtr" (?recvPtr@@3FA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "short TableNum" (?TableNum@@3FA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "float PICONST" (?PICONST@@3MA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "struct data_type data" (?data@@3Udata_type@@A) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "short * Table" (?Table@@3PAFA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "unsigned char * DCtlSend" (?DCtlSend@@3PAEA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "unsigned char * RJCmd" (?RJCmd@@3PAEA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "struct PATCH * recvPatch" (?recvPatch@@3PAUPATCH@@A) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "int pnum" (?pnum@@3HA) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "struct SPATCH (* storePatch)[9]" (?storePatch@@3PAY08USPATCH@@A) already defined in HRadar.obj
HRadarDlg.obj : error LNK2005: "struct SFLAG * storeFlag" (?storeFlag@@3PAUSFLAG@@A) already defined in HRadar.obj
Debug/HRadar.exe : fatal error LNK1169: one or more multiply defined symbols found
Error executing link.exe.
Creating browse info file...

HRadar.exe - 15 error(s), 25 warning(s)

[bobob]

把HRadar.obj删除了再试试

[flyingxu]

你是不是在。h文件中申明了全局变量？
把全局变量放在。cpp文件中！

//xx.cpp

int g_int;

如果别的地方要用，在头文件中：
//yy.h

extern int g_int;

即可

[markov_max]

谢谢各位的回复！flyingxu说得很对，再次表示感谢！:-)