猜数字

#!/bin/bash
flag=true
for ((i=1;i<=3;i++));do
echo "第$i次机会"
read -p "请输入数字" num
if [ $num -gt 88 ];then
echo "数字大了"
elif [$num -lt 88 ];then
echo "数字小了"
else 
echo "猜对了"
flag=false
break
fi
done
if $flg;then
echo "三次机会已用完"
fi