gcc c++ compilier

[robert watson]

Hi Gnu folks,
 
I can't get my HelloWorld c++ test program to work
because <iostream> is not known by the compiler: it
produces 5 errors in all. Therefore gcc is not standard c++.
 
Do you know if there is a standard GNU compiler out there, or
if there is some command that I need to add to the gcc in
the command line to make it work as a standard c++ compiler?
If so this should be the first thing in the manual.
 
Cheers,
 
Robert