##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date started: April 2017
# Modified: 2017-04-17/01:13-0400 btiffin
#
# tectonics: unicon -s negate-operator.icn
#
##+
#
# negate-operator.icn, demonstrate the prefix minus operator
#
procedure main()
write(-"-123")
write(-+1)
write(--1)
write(---1)
end