question on streams ?

is their an output stream or input stream in the compiler like in c++?

i mean if their is an ostream, and an instream so i could overload the operator <<, >> ?

in c++ i could overload it using this function
friend return type &operator<<(ostream&, object type);

thank you.

The playground article here shows how to do an output stream in the arduino environment: Arduino Playground - HomePage