while [ 1 > 2 ]
do
echo "enter your name:"
read name

if [[ -z $name ]]
then
echo "bye"
exit
fi

echo "enter your age:"
read age
if [[ $age -le 0 ]]
then
echo "bye"
exit
fi
if [[ $age -le 16 ]]
then
group="child"
elif [[ $age -ge 17 && $age -le 25 ]]
then
group="youth"
elif [[ $age -gt 25 ]]
then
group="adult"
fi
echo $name, your group is $group
done