Link Error 1120
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Fatal Error Lnk1120 1 Unresolved Externals Visual Studio
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Fatal Error Lnk1120 1 Unresolved Externals Visual Studio 2010
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Fatal Error Lnk2019
October 2009 - 06:37 AM Rate Topic: #1 Zephere New error link 2001 D.I.C Head Reputation: 0 Posts: 1 Joined: 30-October 09 LINK ERROR 2019 and LINK ERROR 1120
Link 2019
Posted 30 October 2009 - 06:34 AM Hey guys, I have a few link errors that i dont know how to resolve, please help me... I have https://msdn.microsoft.com/en-us/library/z98k84c3.aspx compiled everything and there were no syntax errors, but when I run it, it gave me two link errors: Error 1 error LNK2019: unresolved external symbol "public: __thiscall Employee::Employee(void)" (??0Employee@@[emailprotected]) referenced in function _main Driver.obj C++ Staff Management System Error 2 fatal error LNK1120: 1 unresolved externals D:\Ju Lian\Documents\Visual Studio 2008\Projects\C++ Staff Management System\Debug\C++ Staff http://www.dreamincode.net/forums/topic/135467-link-error-2019-and-link-error-1120/ Management System.exe C++ Staff Management System and my code is as follows main.cpp #include "Login.h" int main() { EmployeeManager *manager = new EmployeeManager(); Employee *currentUser = new Employee(); Login *Guest = new Login(); Guest->Loginuser(manager, currentUser); return 0; } Employee.h #ifndef _EMPLOYEE_H #define _EMPLOYEE_H #include
Forum Visual C++ & C++ Programming Visual C++ Programming fatal error LNK1120: 2 unresolved externals If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register or http://forums.codeguru.com/showthread.php?352316-fatal-error-LNK1120-2-unresolved-externals Login before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 11 of 11 Thread: fatal error LNK1120: 2 unresolved http://cboard.cprogramming.com/cplusplus-programming/151740-error-lnk2019-fatal-error-lnk1120-1-unresolved-externals.html externals Tweet Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode August 9th, 2005,05:25 AM #1 samehdi View Profile View Forum Posts Junior Member Join visual studio Date Mar 2005 Posts 11 fatal error LNK1120: 2 unresolved externals hi i m new in vc++ enviroment i have an problem arrived i have a code of udpdump which capture a packet from network and show but it is in dot c extension class i have rewrite this code in vc soo i made object of class udpdump and use in my another program but it had 2 error when i make a header files and source file fatal error lnk1120 for this class can anyone help me i required a urgent response the error which occur when i compile the code r 1-- UdpDum1.obj : error LNK2001: unresolved external symbol "struct pcap * __cdecl pcap_open(char const *,int,int,int,struct pcap_rmtauth *,char *)" (?pcap_open@@YAPAUpcap@@PBDHHHPAUpcap_rmtauth@@PAD@Z) 2--UdpDum1.obj : error LNK2001: unresolved external symbol "int __cdecl pcap_findalldevs_ex(char *,struct pcap_rmtauth *,struct pcap_if * *,char *)" (?pcap_findalldevs_ex@@YAHPADPAUpcap_rmtauth@@PAPAUpcap_if@@0@Z) 3--Debug/TestPacketCapturing.exe : fatal error LNK1120: 2 unresolved externals will any body tell me the reason and solution of that error ??? Reply With Quote August 9th, 2005,05:42 AM #2 Paul McKenzie View Profile View Forum Posts Elite Member Power Poster Join Date Apr 1999 Posts 27,449 Re: fatal error LNK1120: 2 unresolved externals Those are not compiler errors, those are linker errors. Simply, the linker is trying to find these functions ( pcap_open, pcap_findalldevs_ex) and the linker can't find them. 1) Where are these functions located? Are they in another library? If so, you need to add the library to your project. 2) Are these functions in another source file? If so, you need to add those source files to your project. 3) Are these 'C' functions and not C++ functions? If so, then you need to change the declaration of the functions to "extern 'C'", since the C++ compiler has mangled the names of the functions to different names in the object file, and the linker is looking for the mangled name instead of the strai
Programming Boards C++ Programming Error LNK2019 and Fatal error LNK1120: 1 unresolved externals Getting started with C or C++ | C Tutorial | C++ Tutorial | C and C++ FAQ | Get a compiler | Fixes for common problems Thread: Error LNK2019 and Fatal error LNK1120: 1 unresolved externals Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 10-27-2012 #1 aileentas View Profile View Forum Posts Registered User Join Date Sep 2012 Posts 14 Error LNK2019 and Fatal error LNK1120: 1 unresolved externals Hello, I've been trying to find a solution to this problem, but none of them have worked so far. I know which line of code is causing the error, but not how to stop it. I google searched for a solution, and tryed a bunch of things, such as making sure my program was a 32console application, and I was calling the header file correctly, as well as trying to find what it was that wasn't linking, but I don't have a lot of experiance, and whatever I'm missing, I can't seem to find it. Error Message: 1>------ Build started: Project: annoting, Configuration: Debug Win32 ------ 1>Main.obj : error LNK2019: unresolved external symbol "int __cdecl Equation(char)" (?Equation@@YAHD@Z) referenced in function _main 1>C:\Users\User\Documents\Visual Studio 2010\Projects\annoting\Debug\annoting.exe : fatal error LNK1120: 1 unresolved externals ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== main.cpp Code: #include