MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___
2015-05-26 08:24
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最近在学C++,这是我遇到的一个问题,编译报错如下:
1>Linking...
1>MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
1>D:\Documents\VS projects\6\Debug\6.exe : fatal error LNK1120: 1 unresolved externals
下面是网上常见的解决方法,基本能解决问题:
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
二,产生这个问题可能的原因
1, 你用vc建了一个控制台程序,它的入口函数应该是main, 而你使用了WinMain.
2. 你用vc打开了一个.c/.cpp 文件,然后直接编译这个文件,这个文件中使用了WinMian而不是main作为入口函数。vc这时的默认设置是针对控制台程序的。
如果入口函数是WinMain,
1.进入project->setting->c/c++, 在category中选择preprocessor,在processor definitions中删除_CONSOLE, 添加_WINDOWS
2.进入project->setting->Link, 在Project options中将 /subsystem:console改为/subsystem:windows.
3.保存设置,Rebuild All.
如果入口函数是main,做反向的修改。
四,VS2005中的设置
1.菜单中选择 Project->Properties, 弹出Property Pages窗口
2.在左边栏中依次选择:Configuration Properties->C/C++->Preprocessor,然后在右边栏的Preprocessor Definitions对应的项中删除_CONSOLE, 添加_WINDOWS.
3.在左边栏中依次选择:Configuration Properties->Linker->System,然后在右边栏的SubSystem对应的项改为Windows(/SUBSYSTEM:WINDOWS)
4.Rebuild All. Ok 。
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
而我使用网上的这些方法,还是没用,那么 问题来了,究竟是为什么呢?
==>原因是我的main函数写成了mian,我的天!!把这个改过来之后再编译就可以了.
PS:希望大家以后别再犯我这种错误了~
1>Linking...
1>MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
1>D:\Documents\VS projects\6\Debug\6.exe : fatal error LNK1120: 1 unresolved externals
下面是网上常见的解决方法,基本能解决问题:
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
二,产生这个问题可能的原因
二,产生这个问题可能的原因1, 你用vc建了一个控制台程序,它的入口函数应该是main, 而你使用了WinMain.
2. 你用vc打开了一个.c/.cpp 文件,然后直接编译这个文件,这个文件中使用了WinMian而不是main作为入口函数。vc这时的默认设置是针对控制台程序的。
三, 解决方法
如果入口函数是WinMain,1.进入project->setting->c/c++, 在category中选择preprocessor,在processor definitions中删除_CONSOLE, 添加_WINDOWS
2.进入project->setting->Link, 在Project options中将 /subsystem:console改为/subsystem:windows.
3.保存设置,Rebuild All.
如果入口函数是main,做反向的修改。
四,VS2005中的设置
1.菜单中选择 Project->Properties, 弹出Property Pages窗口
2.在左边栏中依次选择:Configuration Properties->C/C++->Preprocessor,然后在右边栏的Preprocessor Definitions对应的项中删除_CONSOLE, 添加_WINDOWS.
3.在左边栏中依次选择:Configuration Properties->Linker->System,然后在右边栏的SubSystem对应的项改为Windows(/SUBSYSTEM:WINDOWS)
4.Rebuild All. Ok 。
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
而我使用网上的这些方法,还是没用,那么 问题来了,究竟是为什么呢?
==>原因是我的main函数写成了mian,我的天!!把这个改过来之后再编译就可以了.
PS:希望大家以后别再犯我这种错误了~
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