hola a todo.
buen espeor que me puedan ayudar bueno es que anterior mente ya habia compilado sockets en c en codeblock y en devc++ pero ahora ya no me quiere compilar en codeblocks me sale esto:

    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\basetsd.h||In function 'Ptr32ToPtr':|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\basetsd.h|299|warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\basetsd.h||In function 'Handle32ToHandle':|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\basetsd.h|308|warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\basetsd.h||In function 'PtrToPtr32':|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\basetsd.h|317|warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\winnt.h|307|warning: "_cdecl" redefined [enabled by default]|
    C:\progc\pruebas\sock.c|1|note: this is the location of the previous definition|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\winnt.h|308|warning: "__cdecl" redefined [enabled by default]|
    C:\progc\pruebas\sock.c|1|note: this is the location of the previous definition|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\winuser.h|1086|warning: declaration does not declare anything [enabled by default]|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\winuser.h|12838|warning: declaration does not declare anything [enabled by default]|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\winuser.h|12843|warning: declaration does not declare anything [enabled by default]|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\objidl.h|11066|warning: declaration does not declare anything [enabled by default]|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\wtypes.h|752|error: pasting "/" and "/" does not give a valid preprocessing token|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\oaidl.h|473|note: in expansion of macro '_VARIANT_BOOL'|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\wtypes.h|752|error: expected specifier-qualifier-list before '/' token|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\oaidl.h|473|note: in expansion of macro '_VARIANT_BOOL'|
    C:\Program Files (x86)\Windows Kits\8.0\Include\shared\wtypes.h|752|error: pasting "/" and "/" does not give a valid preprocessing token|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\oaidl.h|488|note: in expansion of macro '_VARIANT_BOOL'|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\propidl.h|647|error: array type has incomplete element type|
    C:\Program Files (x86)\Windows Kits\8.0\Include\um\propidl.h|653|error: array type has incomplete element type|
    ||=== Build failed: 5 error(s), 9 warning(s) (0 minute(s), 1 second(s)) ===|
 

en dev c++ me sale lo siguiente:

    239 0   C:\mingw completo\mingw\include\windef.h    In file included from C:\mingw completo\mingw\include/windef.h
    60      C:\mingw completo\mingw\include\windows.h                    from C:\mingw completo\mingw\include/windows.h
    22      C:\mingw completo\mingw-mingw-w32api\include\winsock2.h                  from C:\mingw completo\mingw-mingw-w32api\include\winsock2.h
    83      C:\progc\ifdef.c                     from C:\progc\ifdef.c
    2398    2   C:\mingw completo\mingw\include\winnt.h [Error] #error "undefined processor type"
    2401    1   C:\mingw completo\mingw\include\winnt.h [Error] unknown type name 'CONTEXT'
    62  0   C:\mingw completo\mingw\include\windows.h   In file included from C:\mingw completo\mingw\include/windows.h
    22      C:\mingw completo\mingw-mingw-w32api\include\winsock2.h                  from C:\mingw completo\mingw-mingw-w32api\include\winsock2.h
    83      C:\progc\ifdef.c                     from C:\progc\ifdef.c
    1733    1   C:\mingw completo\mingw\include\winbase.h   [Error] unknown type name 'CONTEXT'
 

mi codigo es este:

    #include <stdio.h>
        #include <stdlib.h>
        #include <winsock2.h>
        #include <windows.h>
 
        #define PORT 3550
        #define BACKLOG 2
 
        main()
        {
        WSADATA wsaData;
          if (WSAStartup(MAKEWORD(2,0), &wsaData) != 0 )
          {
              printf("No se pudo inicar la libreria de sockets");
              return 0;
          }
 
           int fd, fd2;
 
           struct sockaddr_in server;
           struct sockaddr_in client;
           int sin_size;
 
           if ((fd=socket(AF_INET, SOCK_STREAM, 0)) == -1 ) {
              printf("error en socket()\n");
              exit(1);
           }
 
           server.sin_family = AF_INET;
 
           server.sin_port = htons(PORT);
           server.sin_addr.s_addr = INADDR_ANY;
           if(bind(fd,(struct sockaddr*)&server,
                   sizeof(struct sockaddr))==-1) {
              printf("error en bind() \n");
              exit(-1);
           }
 
           if(listen(fd,BACKLOG) == -1) {
              printf("error en listen()\n");
              exit(-1);
           }
 
           while(1) {
              sin_size=sizeof(struct sockaddr_in);
 
              if ((fd2 = accept(fd,(struct sockaddr *)&client,
                                &sin_size))==-1) {
                 printf("error en accept()\n");
                 exit(-1);
              }
 
              printf("Se obtuvo una conexión desde %s\n",
                     inet_ntoa(client.sin_addr) );
 
 
              send(fd2,"Bienvenido a mi servidor.\n",22,0);
 
 
              close(fd2);
           }
        WSACleanup();
        }