Write the syntax for the following program. The command name is foobar. There are three options -a, -b and -c. The -c option takes an optional argument named value. Finally, there must be one or more...

Write the syntax for the following program. The command name is foobar. There are three options -a, -b and -c. The -c option takes an optional argument named value. Finally, there must be one or more instances of an argument named file.

When you learn the syntax of a new program, what are the three basic questions you should ask?