#!/bin/ksh
# temperature conversion
integer ftemp=0
integer ctemp=0

if [ $# -gt 1 ]
then
	print "Usage $0 number"
	print "   or $0"	
	exit
fi

if [ $# -eq 1 ]
then
	ftemp=$1
    else
	read ftemp?"Give temperature: "
fi	

(( ctemp=(ftemp-32)*5/9 ))

print "Temperature (degrees F)  $ftemp"
print "Converts to (degrees C)  $ctemp"