error LNK2005 and error LNK2019

error LNK2019: unresolved external symbol __imp___CrtDbgReportW referenced in function "public: double & __thiscall std::vector<double,class std

MSVCRT.lib(MSVCR80.dll) : error LNK2005: _strtol already defined in LIBCMTD.lib(strtol.obj)

this kind error, just need change the C/C++->code generation-> runtime library "Multi-threaded Debug (/MTd)" ->Multi-threaded Debug DLL (/MDd)