#include<iostream>
using namespace std;
int main()
{
    cout<<"This is a test program."<<endl;
}
//error show
fatal error: unable to open input file 'iostream'
--- errorlevel 1

Try:
    dmc -I\dm\stlport\stlport test.cpp

"wukexin" <wukexin@sina.com> wrote in message news:bcnaji$1aej$1@digitaldaemon.com...
> #include<iostream>
> using namespace std;
> int main()
> {
>     cout<<"This is a test program."<<endl;
> }
> //error show
> fatal error: unable to open input file 'iostream'
> --- errorlevel 1
>
>

Like Walter said. Put the stlport/stlport in your sc.ini include path before the defualt include path. DMC defaults to the SGI C++SL which has a rather...experimental(they said it, not me)...iostream foundation.  The namespaces and C++STD header w/o .h are not supported yet, to my knowledge. Praise STLPort! <dances ceremonial dance>

"Walter" <walter@digitalmars.com> wrote in message news:bcrptt$2d5o$3@digitaldaemon.com...
> Try:
>     dmc -I\dm\stlport\stlport test.cpp
>
> "wukexin" <wukexin@sina.com> wrote in message news:bcnaji$1aej$1@digitaldaemon.com...
> > #include<iostream>
> > using namespace std;
> > int main()
> > {
> >     cout<<"This is a test program."<<endl;
> > }
> > //error show
> > fatal error: unable to open input file 'iostream'
> > --- errorlevel 1
> >
> >
>
>