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Linker Error Already Defined In Main.obj

Instead, in the header, have //students.h extern Node * rejectedFirstNode; and move the definition in a single cpp file: //students.cpp Node * rejectedFirstNode; It also seems like you're writing C code. c++ visual-studio-2010 oop boost include share|improve this question asked Mar 14 '13 at 22:16 Tomáลก Zato 13.5k1355237 4 Don't include .cpp files, include .h files instead, if you don't have When you compile the other .cpp file, the compiler will generate the appropriate control information telling the linker that it needs to find HELLO somewhere else. Not the answer you're looking for? http://cygnussoft.com/linker-error/linker-error-undefined-symbol-main-in-module-c0-asm.html

asked 3 years ago viewed 6609 times active 1 year ago Related 3Link error: unresolved operator << for std::basic_ostream with CStringT0Microsoft Overloading the << Operator Sample throws link errors1'Already defined in The time now is 23:57. Who is the highest-grossing debut director? more hot questions lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science Other anchor

Solved: C++ Linker error - "already defined in stdafx.obj" Discussion in 'Software Development' started by andythepandy, Oct 28, 2009. Solution 1 - Splitting into .h and .cpp loan.h ostream & operator<<(ostream & ostr, Loan & aLoan); loan.cpp ostream & operator<<(ostream & ostr, Loan & aLoan) { aLoan.printOn(ostr); return ostr; } up vote 1 down vote accepted I fixed the problem: I found that it is a problem with the order of the includes.

I am getting some errors that I don't understand. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Use depends.exe to check each library that you are linking explicitly in turn to find the odd one out. share|improve this answer answered Mar 4 at 1:04 DellGuy 112 Thanks.

Subscribed! Take a ride on the Reading, If you pass Go, collect $200 How do you curtail too much customer input on website design? If you choose to participate, the online survey will be presented to you when you leave the Msdn Web site.Would you like to participate? http://stackoverflow.com/questions/13128719/already-defined-in-main-obj How to create a company culture that cares about information security?

Declare them in "students.h": extern Node *allFirstNode; extern Node *admitedFirstNode; extern Node *rejectedFirstNode; and in "students.cpp" define the variables: Node *allFirstNode; Node *admitedFirstNode; Node *rejectedFirstNode; share|improve this answer answered Oct 29 I played around with that setting and where I was including the file but still those errors. The whole concept of include files is rather broken in C++ as compared to many other languages. Subscribed!

Players Characters don't meet the fundamental requirements for campaign Why do people move their cameras in a square motion? I have read this answer, but it was no help, since it expects double inclusions. If so, then it's not at all surprising you get linker errors - the code in hello.cpp gets included twice. In the above code, the globals is forward declared in a header file.

up vote 4 down vote You probably don't want to do this: #include "client.cpp" A *.cpp file will have been compiled by the compiler as part of your build. have a peek at these guys Would not allowing my vehicle to downshift uphill be fuel efficient? IMM, Oct 29, 2009 #2 andythepandy Thread Starter Joined: Jul 2, 2006 Messages: 367 Hi, thanks for the reply. Could this be a problem? –Jens Mar 22 '15 at 21:55 @user3591315 There's no point trying to understand why some random header include combinations work or not if the

If so, did you use a #ifndef statement to assure that these things were only included once? #3 12-Apr-2004, 16:19 TekiFreek Awaiting Email Confirmation Join Date: Mar 2004 You must have some other *.cpp file in your project which somehow includes ActorFactory.h (directly or indirectly). That would be rather helpful to provide some advice. check over here This also helped me. –rrirower Apr 25 at 18:52 add a comment| up vote 1 down vote I also found that if you use LTGC (link-time code generation) and you've just

As a general rule, you should not define object or functions in a header file for just this reason. UV lamp to disinfect raw sushi fish slices What is the 'dot space filename' command doing in bash? contact us Sign in Gallery MSDN Library Forums Get started for free Ask a question Quick access Forums home Browse forums users FAQ Search related threads Remove From My Forums Answered

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main.cpp #include "hello.cpp" Are you sure you meant to include hello.cpp, and not hello.h? What does a profile's Decay Rate actually do? When I try to compile I get a LNK2005 error that tells me that everything in jolt.h is already defined in main.obj The error looks like this: game.obj : error LNK2005: asked 1 year ago viewed 1382 times active 1 year ago Visit Chat Related 4Already defined in main.obj-2Abstract Factory - getting LKN2019 of death error message2C++ “fatal error LNK1120” unresolved static

How to decipher Powershell syntax for text formatting? share|improve this answer answered Oct 29 '12 at 20:02 Luchian Grigore 167k28295455 add a comment| up vote 3 down vote You are declaring variables in students.h and students.h is included in This way of doing it throws up the errors: 1>Building1Explore.obj : error LNK2005: "struct IDirect3D9 * d3d" ([email protected]@[email protected]@A) already defined in stdafx.obj 1>Building1Explore.obj : error LNK2005: "struct IDirect3DDevice9 * d3ddev" ([email protected]@[email protected]@A) this content Is there a word for spear-like?

You might want to use an ifndef block to enclose the contents of your header file (see the b.h example in http://www.cplusplus.com/forum/beginner/7877/ ) or use #pragma once http://en.wikipedia.org/wiki/Pragma_once to avoid it Does it have something to do with the fact that they have libraries associated with them? globals scope of declararion is from the point where its declared to the end of the file.You declared the globals in jolt.h and trying to access it from game.cpp which is Its rather simple.

Does it have something to do with the fact that they have libraries associated with them? Spaced-out numbers What to do when you've put your co-worker on spot by being impatient? For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question. You are still leaving the decision of whether the compiler will inline it or not to the compiler.

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed in C/C++->Code Generation using Multi-threaded Debug DLL (/MDd). –snowdude Oct 18 '12 at 9:07 add a comment| 5 Answers 5 active oldest votes up vote 2 down vote The most likely All that's required is that all of the definitions be identical. How to know if a meal was cooked with or contains alcohol?

c++ visual-studio share|improve this question asked Oct 2 '13 at 23:49 Sarah 63141731 2 Just put inline in front of your operator<<() definition so that multiple definitions don't generate that But thats it though. :o –Jens Mar 22 '15 at 21:39 @user3591315: Well, I guess you also have something like Scene.cpp which includes Scene.h. Specific word to describe someone who is so good that isn't even considered in say a classification How do you grow in a skill when you're the company lead in that share|improve this answer answered Oct 30 '12 at 14:49 Cheiron 1,30831036 1 I lost the source of this information (so YMMV), but an alternative is to add the following lines