View Compilation Error

In file included from GCC4.9.2/x86_64-w64-mingw32/include/locale.h:12:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/clocale:42,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:40,
                 from 0_0_23893929_32028.cpp:1:
0_0_23893929_32028.cpp: In function 'int main()':
0_0_23893929_32028.cpp:8:27: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
         while(gets(str)!= EOF)
                           ^