Error 1 Error Lnk2005 Already Defined In Main.obj
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Already defined in main.obj [closed] up vote 4 down vote favorite 2 This is the code for my problem and i get 4 errors: student.obj : error LNK2005: "struct Node * admitedFirstNode" (?admitedFirstNode@@3PAUNode@@A) already defined in main.obj student.obj : error LNK2005: "struct Node * allFirstNode" (?allFirstNode@@3PAUNode@@A) already defined in main.obj student.obj : error LNK2005: "struct Node * rejectedFirstNode" (?rejectedFirstNode@@3PAUNode@@A) already defined in main.obj pb4_OOP_lab1\Debug\pb4_OOP_lab1.exe : fatal error LNK1169: one or more multiply defined symbols found #include "students.h" //main int main() { for(int i=0;i
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up http://stackoverflow.com/questions/13128719/already-defined-in-main-obj Already defined Obj? Linking error? up vote 3 down vote favorite 1 I can't for the life of me figure out why I am getting these errors, especially since I have include guards. These are my errors (please ignore what I named my computer): 1>main.obj : error LNK2005: "class std::basic_ostream > >& __cdecl operator<<(class std::basic_ostream > &,class >Date &)" (??6@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AAV01@AAVDate@@@Z) already >defined in http://stackoverflow.com/questions/19148639/already-defined-obj-linking-error loan.obj 1>main.obj : error LNK2005: "class std::basic_ostream > >& __cdecl operator<<(class std::basic_ostream > &,class >Loan &)" (??6@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AAV01@AAVLoan@@@Z) already >defined in loan.obj 1>C:\Users\SweetAssSarah\Documents\Visual Studio >2012\Projects\ConsoleApplication4\Debug\a1.exe : fatal error LNK1169: one or more multiply >defined symbols found And here are my 4 files: Main.cpp: #ifndef _main_cpp #define _main_cpp #include
Windows Desktop Development > C++ Standards, Extensions, and Interop Question 0 Sign in to vote I recently installed VC++ 2005 EXP edition. 1) I created https://social.msdn.microsoft.com/Forums/vstudio/en-US/cf3b6326-6e58-4b85-afb1-2694a1450128/error-lnk2005-main-already-defined?forum=vclanguage a project name Radius and created two new items hello.cpp and area.cpp. 2) area.cpp is the first item and hello.cpp is the second one. 3) When I build the project Radius, I http://algoprob.blogspot.com/2011/04/error-lnk2005-already-defined-in.html got the error LNK2005: _main already defined in area.obj Can you guide me to fix the compilation error. Thanks GKW82 Tuesday, July 04, 2006 4:08 AM Reply | Quote Answers 0 error 1 Sign in to vote This error is because of multiple definitions of main. You must have defined main in area.cpp as well as in hello.cpp. In C/C++ programs, you can write only one main per application. Remove one definition of main and it should work fine. Cheers Tuesday, July 04, 2006 5:37 AM Reply | Quote All replies 0 Sign in to vote This error 1 error error is because of multiple definitions of main. You must have defined main in area.cpp as well as in hello.cpp. In C/C++ programs, you can write only one main per application. Remove one definition of main and it should work fine. Cheers Tuesday, July 04, 2006 5:37 AM Reply | Quote 0 Sign in to vote Yes. I defined main() in both. I removed the main from hello and I am now getting the error hello.cpp(4) : error C2447: '{' : missing function header (old-style formal list?) GKW82 Wednesday, July 05, 2006 11:26 PM Reply | Quote 0 Sign in to vote Delete area.cpp and creat it. Do the thing above. Thursday, July 06, 2006 1:39 AM Reply | Quote 0 Sign in to vote Nope.. didn't work. Getting the same error. GKW82 Thursday, July 06, 2006 4:06 AM Reply | Quote 0 Sign in to vote Pls. paste the hello.cpp code Thursday, July 06, 2006 5:24 AM Reply | Quote 0 Sign in to vote This is what MSDN says : Error Message '{' : missing function header (old-style formal list?) An open brace occurs at glo
ProblemWhat does an error like this mean? 1>Particle.obj : error LNK2005: "struct SDL_Surface * red" (?red@@3PAUSDL_Surface@@A) already defined in main.obj to put it simply it means that a global variable is defined in two source files because you included the same header file in two different source files. Lets say I have two source files main.cpp and particle.cpp and a header file called globalobjs.h. In my header file I declare a variable of integer type. Now I need to use this number in both main.cpp and particle.cpp so I'm going to #include "globalobs.h" in both source files. But here is the problem, if I include that globalobjs twice it is like saying the line: int variable; twice and so the the linker gives an error message. It is because it doesn't know if I am talking about the same variable or two different variables. It wonders if you want the same variable used in two source files or if you want the two source files to have their own integer called variable. The same logical conclusions would apply for any other type of variable or even functions In my case here is my Header file called particle.h: #pragma once #include