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Error Redefinition Of Class C++

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Error Redefinition Of Typedef 'gliststore'

community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up multiple header files redefinition error in C up vote 0 down vote favorite When including multiple header files #include #include #include #include "stackADT.h" #include "queueADT.h" redefinition error occurs In file error redefinition of ‘class included from graphTraverse3.c:10: ./queueADT.h:10:16: error: redefinition of 'node' typedef struct node ^ ./stackADT.h:9:16: note: previous definition is here typedef struct node ^ In file included from graphTraverse3.c:10: ./queueADT.h:69:20: warning: incompatible pointer types assigning to 'QUEUE_NODE *' from 'struct node *' [-Wincompatible-pointer-types] ...queue->front = queue->front->next; ^ ~~~~~~~~~~~~~~~~~~ ./queueADT.h:93:16: warning: incompatible pointer types assigning to 'QUEUE_NODE *' from 'struct node *' [-Wincompatible-pointer-types] queue->front = queue->front->next; ^ ~~~~~~~~~~~~~~~~~~ ./queueADT.h:117:23: warning: incompatible pointer types assigning to 'struct node *' from 'QUEUE_NODE *' [-Wincompatible-pointer-types] queue->rear->next = newPtr; ^ ~~~~~~ 3 warnings and 1 error generated. I tried attaching these, but it didn't work. #ifndef _STACK_H_ #define _STACK_H_ ....content.... #endif Maybe it is only for C++. Added relevant header file parts. First queueADT.h #ifndef _QUEUE_H_ #define _QUEUE_H_ #include #include #include // data type typedef struct node { void* dataPtr; struct node* next; } QUEUE_NODE; and this is stackADT.h. #ifndef _STACK_H_ #define _STACK_H_ #include #include #include // Structure D

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Error Redefinition Of ‘struct

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Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, error redefinition of default argument helping each other. Join them; it only takes a minute: Sign up GCC compiler error: “redefinition…previously defined” up vote 7 down vote favorite 3 I'm getting a lot of " redefinition of x....x previously defined here". Please what http://stackoverflow.com/questions/30798444/multiple-header-files-redefinition-error-in-c does this error means? c++ gcc compiler-construction share|improve this question asked Apr 2 '09 at 1:00 caesar add a comment| 3 Answers 3 active oldest votes up vote 19 down vote You need to limit each file from being included only once. You can do this in 2 ways. 1) At the top of your header files put: #pragma once Or 2) if your compiler doesn't support that, put at the top/end of your header files: http://stackoverflow.com/questions/707920/gcc-compiler-error-redefinition-previously-defined #ifndef _MYFILE_H_ #define _MYFILE_H_ ... #endif Replace MYFILE with the name of your file, and replace ... with the contents of the header file. share|improve this answer edited Apr 2 '09 at 7:11 unwind 253k38330460 answered Apr 2 '09 at 1:18 Brian R. Bondy 197k82472571 1 I think that #pragma only works in VC++, not in gcc. The #define trick is portable. –Gorpik Apr 2 '09 at 7:19 supoprted by gcc and vc++ –Brian R. Bondy Apr 2 '09 at 10:29 Wikipedia says #pragma once is supported by VC++ and gcc en.wikipedia.org/wiki/Pragma_once . –Max Lybbert Apr 3 '09 at 20:48 #pragma works fine with gcc.. I'm using it at this very moment after I reading about it and it solved a ton of errors! –mmoment Sep 7 '12 at 14:13 add a comment| up vote 9 down vote The error means that there is a symbol that has been defined in one place and an alternate definition has been made in another place. This can occur if in cases like: if you define two functions with the same name if there is a mismatch between a function and it's prototype you call a non-trivial function before it has been defined, and without a prototype In this last case there will be a mismatch between the real function and the "impli

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