LINK fatal error LNK1561 entry point must be defined ERROR IN VC

Question

I installed MS VS VC   for the first time in order to start programming OpenGL with GLFW library  I follower instructions on how to install it over at http   shawndeprey blogspot com 2012 02 setting-up-glfw-in-visual-studio-2010 html Then I wrote this simple program  just to test it  which did work on Eclipse    include  lt stdlib h gt   include  lt GL glfw h gt   using namespace std   int main         int running   GL TRUE      if   glfwInit              exit EXIT FAILURE              if   glfwOpenWindow 300  300  0  0  0  0  0  0  GLFW WINDOW             glfwTerminate            exit EXIT FAILURE              while  running               glClear  GL COLOR BUFFER BIT            glfwSwapBuffers            running    glfwGetKey GLFW KEY ESC   amp  amp  glfwGetWindowParam GLFW OPENED              glfwTerminate        exit EXIT SUCCESS       return 0      But then I got this awful error   ------ Build started  Project  first1  Configuration  Debug Win32 ------    LINK   fatal error LNK1561  entry point must be defined            Build  0 succeeded  1 failed  0 up-to-date  0 skipped              I know  I ve looked around on the internet and the only solution I found was  It requires main   function in order to work   I obviously have it  right there  but it still throws me the same fatal error     Would be great to get response on how to fix it  There might me a flaw in the installation process or something

User · Answer

change it to Console   SUBSYSTEM CONSOLE  it will work

User · Answer

Is this a console program project or a Windows project   I m asking because for a Win32 and similar project  the entry point is WinMain        Right-click the Project  not the Solution  on the left side  Then click Properties -  Configuration Properties -  Linker -  System   If it says Subsystem Windows your entry point should be WinMain    i e    int WINAPI WinMain HINSTANCE hInstance  HINSTANCE hPrevInstance  LPWSTR lpCmdLine  int nShowCmd       your code here         Besides  speaking of the comments   This is a compile  or more precisely a Link  error  not a run-time error   When you start to debug  the compiler needs to make a complete program  not just to compile your module  and that is when the error occurs     It does not even get to the point being loaded and run

User · Answer

You can get this error if you define a project as an  exe but intent to create a  lib or a  dll

User · Answer

In Visual Studio  Properties - gt  Advanced - gt  Entry Point - gt  write just the name of the function you want the program to begin running from  case sensitive  without any brackets and command line arguments

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I ve had this happen on VS after I changed the file s line endings  Changing them back to Windows CR LF fixed the issue

User · Answer

In my case  the program was running fine  but after one day  I just ran into this problem without doing anything     The solution was to manually add  Main  as the Entry Point  before editing  the area was empty

User · Answer

Main was missing in the entry point configuration

User · Answer

It cant find the entry point for your program  in this case main    Your linker settings are likely incorrect   See this post here

[c++] LINK : fatal error LNK1561: entry point must be defined ERROR IN VC++

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