View Compilation Error

132472_0_15075.cpp
132472_0_15075.cpp(24) : error C2084: function 'int __cdecl f(int)' already has a body
132472_0_15075.cpp(30) : error C2568: ':' : unable to resolve function overload
        could be 'int __cdecl f(int)'
        132472_0_15075.cpp(3) : see declaration of 'f'
132472_0_15075.cpp(30) : error C2446: ':' : no conversion from 'int (__cdecl *)(int)' to 'int'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
132472_0_15075.cpp(33) : error C2084: function 'int __cdecl main(void)' already has a body