? 1 #!/bin/bash

? ? ? 2? read -p "請輸入一個(gè)數(shù)字：" num1

? ? ? 3? read -p "請輸入運(yùn)算符：" ope

? ? ? 4? read -p "請輸入第二個(gè)數(shù):" num2

? ? ? 5 if [ -n "$num1" -a -n $num2" -n "$ope" ]

? ? ? 6? ?then

? ? ? 1 #!/bin/bash

? ? ? 2? read -p "請輸入一個(gè)數(shù)字：" num1

? ? ? 3? read -p "請輸入運(yùn)算符：" ope

? ? ? 4? read -p "請輸入第二個(gè)數(shù):" num2

? ? ? 5 if [ -n "$num1" -a -n $num2" -n "$ope" ]

? ? ? 6? ?then

? ? ? 7? ? ? test1=$(echo $num1 | sed 's/[0-9]//g')

? ? ? 8? ? ? test2=$(echo $num2 | sed 's/[0-9]//g')

? ? ? 9? ?if [ -z "$test1" -a -z "$test2" ]

? ? ?10? ? ?then

? ? ?11? ? ? if [ "$ope" == "+" ]

? ? ?12? ? ? then

? ? ?13? ? ?sum=$(($num1+$num2))

? ? ?14? ?elif? [ "$ope" == "-" ]

? ? ?15? ? ? then

? ? ?16? ? sum=$(($num1-$num2))

? ? ?17? ?elif [ "$ope" == "*" ]

? ? ?18? ? then

? ? ?19? ? ? sum=$(($num1*$num2))

? ? ?20? elif [ "$ope" == "/" ]

? ? ?21? ? then

? ? ?22? ? ? ?sum=$(($num/$num2))

? ? ?23? else

? ? ?24? ? echo "請輸入正確運(yùn)算符"

? ? ?25? ? exit 1

? ? ?26 fi

? ? ?27? ?else

? ? ?28? ? echo "請輸入數(shù)字類型"

? ? ?29? ?exit 2

? ? ?30 fi

? ? ?31? ?else

? ? ?32? ?echo "輸入不能不為空"

? ? ?33? exit 3

? ? ?34 fi

? ? ?35? echo "$num1 $ope $num2 :$sum"

報(bào)錯(cuò)信息：

./sum.sh:行35: 尋找匹配的 `"' 是遇到了未預(yù)期的文件結(jié)束符

./sum.sh:行37: 語法錯(cuò)誤: 未預(yù)期的文件結(jié)尾