file included from C:/MinGW/include/c++/3.2.3/backward/iostream.h:31, from aaaiii.cpp:1: MinGW/include/c++/3.2.3/backward/backward_warning.h:32:2: warning: #warning T file includes at least one deprecated or antiquated header. Please consider ng one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examp include substituting the <X> header for the <X.h> header for C++ includes, o sstream> instead of the deprecated header <strstream.h>. To disable this warn use -Wno-deprecated.