__LINE__ and __FILE__ -- a beginner's question

[Wade Guthrie]

For what purpose are the __LINE__ and __FILE__ macros used?  Are these
only useful for the writers of code that, in turn, produces compileable
code, or is there some use for the applications programmer?

Thanks in advance.


Wade Guthrie
evil at arcturus.UUCP
Rockwell International
Anaheim, CA

(Rockwell doesn't necessarily believe / stand by what I'm saying; how could
they when *I* don't even know what I'm talking about???)