View Compilation Error

0_0_38543948_13970.cpp: In function 'int main()':
0_0_38543948_13970.cpp:6:2: error: 'ios' has not been declared
  ios::sync_with_stdio(false);
  ^
0_0_38543948_13970.cpp:7:2: error: 'cin' was not declared in this scope
  cin.tie(0);cout.tie(0);
  ^
0_0_38543948_13970.cpp:7:2: note: suggested alternative:
In file included from 0_0_38543948_13970.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
0_0_38543948_13970.cpp:7:13: error: 'cout' was not declared in this scope
  cin.tie(0);cout.tie(0);
             ^
0_0_38543948_13970.cpp:7:13: note: suggested alternative:
In file included from 0_0_38543948_13970.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^