c - same struct different files -


i've got little problem. have 2 files: one.c , two.c both decler , implement struct: stacknode header files are: one.h:

 #ifndef one_h  #define one_h   typedef struct stacknode stacknode;  #endif

two.h:

 #ifndef two_h  #define two_h   #include "one.h"   #endif

cpp files: one.c:

 #include <stdio.h>  #include <malloc.h>  #include <string.h>  #include <stdlib.h>  #include "one.h"   struct stacknode  {    ........  };

two.c:

 #include <stdio.h>  #include <malloc.h>  #include "two.h"  struct stacknode  {    ........  };

why compile , run in linox in visual stutio says: two.obj : error lnk2005: "struct stacknode * top" (?top@@3paustacknode@@a) defined in one.obj 1>c:\users\documents\visual studio 2010\projects\exercise\debug\exercise.exe : fatal error lnk1169: 1 or more multiply defined symbols found

what can work in visual too? thank :)

the linker not structure defined twice. says object top defined twice struct stacknode * top. have define in 1 compilation unit.

two.obj : error lnk2005: "struct stacknode * top" (?top@@3paustacknode@@a) defined in one.obj


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