Help with build error

I can compile the code fine but when i try to build the .exe i get this:

--------------------Configuration: assign1 - Win32 Debug--------------------
Linking...
test1.obj : error LNK2001: unresolved external symbol "int __cdecl getBalance(void)" (?getBalance@@YAHXZ)
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/assign1.exe : fatal error LNK1120: 2 unresolved externals
Error executing link.exe.
assign1.exe - 3 error(s), 0 warning(s)


If anyone can help me out that would be great.

Thanks,

post the code