palindromic C programs

[John Gregor]

There have been quite a few examples of C programs that repeat
themselves.  Are there any programs out there that when program
'foo' is executed it creates source for program 'bar' and vice-
versa?  The result would be a bistable self generating program.
And if bistable is possible, how about tristable, etc.?

	{the world}!tektronix!ogcvax!metheus!johng
	    John Gregor to non-machines.

"This is a test of the Emergency Broadcast System.  If this had been
an actual emergency, do you really think we'd stick around to tell you?"