Write a program that double-spaces a fi le whose name is input by the user. The output fi lename will have the “.new” suffi x affi xed to the input fi lename. Write a program that removes all blank...

Write a program that double-spaces a fi le whose name is input by the user. The output fi lename

will have the “.new” suffi x affi xed to the input fi lename.

Write a program that removes all blank lines from a fi le, whose name is input by the user.

The output fi lename has the “new_” prefi x to the input fi lename. (A blank line comprises only

zero or more whitespace characters.)