RE: [Flightgear-devel] Output streams

[Norman V. <nh...@ca...>]

BERNDT, JON S. (JON) (JSC-EX) (LM) writes:
>
> This would require the ability to set the output
>destination to either cout or a file. It would be something like this:
>
>destination_stream << "Altitude: " << "Position->Geth() << endl;
>
>where, depending on the situation, destination_strema refers to either cout
>or my ofstream file. I am not sure if this is possible. Does anyone know
>offhand if this can be done?


Not sure all compilers support this but ....
this works with libstdc++3

#include <fstream.h>

int main()
{
    ofstream datafile("jnk");
    _IO_ostream_withassign myStream;

    if (datafile) {
        myStream  = datafile;
        myStream << "testing datafile" << endl;

        myStream = cout;
        myStream << "testing cout" << endl;

        datafile.close();
    }
}