Til kasper !

[dnx@localhost C++]$ gcc 3.cpp
In file included from /usr/include/c++/3.3.2/backward/iostream.h:31,
                from 3.cpp:3:
/usr/include/c++/3.3.2/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 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated.
/home/dnx/tmp/ccKJSLAN.o(.text+0x38): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0x3d): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/home/dnx/tmp/ccKJSLAN.o(.text+0x4b): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0x50): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)'
/home/dnx/tmp/ccKJSLAN.o(.text+0x60): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0x65): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/home/dnx/tmp/ccKJSLAN.o(.text+0x75): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0x7a): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/home/dnx/tmp/ccKJSLAN.o(.text+0x8a): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0x8f): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/home/dnx/tmp/ccKJSLAN.o(.text+0x9f): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0xa4): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/home/dnx/tmp/ccKJSLAN.o(.text+0xb4): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0xb9): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/home/dnx/tmp/ccKJSLAN.o(.text+0xc6): In function `main':
: undefined reference to `std::cout'
/home/dnx/tmp/ccKJSLAN.o(.text+0xcb): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char)'
/home/dnx/tmp/ccKJSLAN.o(.text+0x108): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `std::ios_base::Init::Init[in-charge]()'
/home/dnx/tmp/ccKJSLAN.o(.text+0x137): In function `__tcf_0':
: undefined reference to `std::ios_base::Init::~Init [in-charge]()'
/home/dnx/tmp/ccKJSLAN.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
[dnx@localhost C++]$