Question

linux下bash程序的问题

输入分数，判断等级，60-69为D,70-79为C，80-89为B，90-100为A，60以下为FAIL，其他错误输出报错。。。。用if语句，谁会写啊？？？

Answer 1

#!/bin/bash
echo Please input your score:
read score
if [ $score -ge 60 -a $score -le 69 ]
then output="D"
elif [ $score -ge 70 -a $score -le 79 ]
then output="C"
elif [ $score -ge 80 -a $score -le 89 ]
then output="B"
elif [ $score -ge 90 -a $score -le 100 ]
then output="A"
elif [ $score -lt 60 ]
then output="Fail"
else
output="Error"
fi
echo $output