assigning to ans var when using Ctrl+C

[Rik]

11/21/13

Michael,

This is a small issue, but perhaps it has an easy solution.

When I use Ctrl+C to interrupt a system() command, I still get an
assignment to the automatic variable ans.  The value was 2 on a Linux
system and -1.0737e+009 on MinGW.  It would be nice to avoid any kind of
assignment, but if one must be made it would be nicer to use a value like
NaN to indicate that the answer variable is gibberish.

--Rik