#!/bin/tcsh
# routine to categorize the first
# command-line argument
set class
set number = $argv[1]
#
if ($number < 0) then
	@ class = 0
else if (0 <= $number && $number < 100) then
	@ class = 1
else if (100 <= $number && $number < 200) then
	@ class = 2
else
	@ class = 3
endif
#
echo "The number $number is in class ${class}."