having trouble with my code when i build it, i get some linking errors i have no idea what they mean

as far as i know all the libary files that are needed are present for the project, its only WS2_32.LIB that i need anyway i think

Code:
mesagesend.obj : error LNK2001: unresolved external symbol "void __cdecl disconnectfromserver(int)" (?disconnectfromserver@@YAXH@Z)
mesagesend.obj : error LNK2001: unresolved external symbol "int __cdecl connecttoserver(unsigned short,char const *)" (?connecttoserver@@YAHGPBD@Z)
client___Win32_Debug/client.exe : fatal error LNK1120: 2 unresolved externals
Error executing link.exe.
any ideas anyone?