in file included from /usr/include/c++/4.0.0/backward/iostream.h:31,
/usr/include/c++/4.0.0/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 22.214.171.124 of the C++ standard. Examples include substituting the
header for the header for C++ includes, or instead of the deprecated header . To disable this warning use -Wno-deprecated.