Suppose you are writing a program that uses a stream called fin that will be connected to an input file, and a stream called fout that will be connected to an output file. How do you declare fin and...

Suppose you are writing a program that uses a stream called fin that

will be connected to an input file, and a stream called fout that will be

connected to an output file. How do you declare fin and fout? What

include directive, if any, do you need to place in your program file?