#!/bin/sh -u
#  $0 number
# Play a guessing game on the number.
# -IAN! idallen@ncf.ca  October 2001

export PATH=/bin:/usr/bin
umask 022

if [ $# -ne 1 ]; then
	echo 1>&2 "Expecting one argument; found $# ($*)"
	exit 1
fi

number="$1"

# prompt for the first guess
#
echo " "
echo 1>&2 "Please enter your numeric guess:"
read guess
echo "Your guess was: $guess"

# Loop to test the guess and accept more guesses.
# This test statement doesn't handle non-numeric command line
# arguments or non-numeric input from the user (a bug).
#
while [ "$guess" -ne "$number" ]; do
	# tell how the guess relates to the actual number
	#
	echo " "
	if [ "$guess" -lt "$number" ]; then
		echo "$guess is smaller than the number"
	fi
	if [ "$guess" -gt "$number" ]; then
		echo "$guess is larger than the number"
	fi

	# prompt for the next guess
	#
	echo " "
	echo 1>&2 "Please enter your numeric guess:"
	read guess
	echo "Your guess was: $guess"
done

echo " "
echo "Congratulations!  You guessed $number correctly!"