View Compilation Error

In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cassert:43:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:33,
                 from 0_0_27211627_28117.cpp:1:
0_0_27211627_28117.cpp: In function 'bool In(T&)':
0_0_27211627_28117.cpp:17:26: error: 'res' was not declared in this scope
     assert(ret > -1e9 && res < 1e9);
                          ^