Can anyone tell me why am i getting these errors?

[rahultaing]

------ Build started: Project: Project4a, Configuration: Debug Win32 ------ Compiling... Impl.cpp C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(112) : error C2011: 'fd_set' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(54) : see declaration of 'fd_set' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(147) : warning C4005: 'FD_SET' : macro redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(88) : see previous definition of 'FD_SET' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(156) : error C2011: 'timeval' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(97) : see declaration of 'timeval' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(212) : error C2011: 'hostent' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(153) : see declaration of 'hostent' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(225) : error C2011: 'netent' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(166) : see declaration of 'netent' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(232) : error C2011: 'servent' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(173) : see declaration of 'servent' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(244) : error C2011: 'protoent' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(185) : see declaration of 'protoent' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(400) : error C2011: 'sockaddr_in' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(321) : see declaration of 'sockaddr_in' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(410) : error C2011: 'WSAData' : 'struct' type redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock.h(331) : see declaration of 'WSAData' C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\winsock2.h(470) : warning C4005: 'SO_DONTLINGER' : macro redefinition C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\include\win

[John R Shaw]

I do not know the answer, but please do no post every error message. Once they start to repeat them selves it becomes redundant and you are wasting sever storage space. You need to figure out why the first error says the type is a redefinition and go from there. If you solve that problem the rest of them will probably go away. INTP “Testing can show the presence of errors, but not their absence.” Edsger Dijkstra

[Lost User]

Redefinition usually means you have included a header file more than once. Elaine :rose: The tigress is here :-D

[Rilhas]

There is an important nuance to note: I think Elaine's answer is correct for the first errors, where redefinition is the problem, but some other errors point out that the multiple definitions have different linkage. This would mean that the multiple inclusions could have some of the conditions change. For example, if this was in a header file: #ifdef USE_C extern C { #endif typedef struct { int x; int y; int z; } Vector; #ifdef USE_C } #endif Then if one inclusion defines USE_C and the other doesn't then you may get the diferent linkage error, because one will declare the structure as C and the other as C++. Rilhas

[Stephen Hewitt]

Looks like it's becase your including both "winsock2.h" and "winsock2.h". It looks you're meant to pick one or the other - I'd choose "winsock2.h". Steve