Calculator [Shell Program]
clear
ans=Y
while [ "$ans" = "Y" ]
do
clear
echo "*****MENU*****"
echo "1.ADD"
echo "2.SUBSTRACT"
echo "3.MULTIPLY"
echo "4.DIVIDE"
echo "5.MOD"
echo "0.EXIT"
echo "Enter your
Choice"
read ch
case $ch in
1) echo "Enter the
1st number"
read num1
echo "Enter the 2nd number"
read num2
s=`expr $num1 + $num2`
echo "The result:"$s;;
2) echo "Enter the
1st number"
read num1
echo "Enter the 2nd number"
read num2
s=`expr $num1 - $num2`
echo "The result:"$s;;
3) echo "Enter the
1st number"
read num1
echo "Enter the 2nd number"
read num2
s=`expr $num1 \* $num2`
echo "The result:"$s;;
4) echo "Enter the
1st number"
read num1
echo "Enter the 2nd number"
read num2
s=`expr $num1 / $num2`
echo "The result:"$s;;
5) echo "Enter the
1st number"
read num1
echo "Enter the 2nd number"
read num2
s=`expr $num1 % $num2`
echo "The result:"$s;;
0) exit;;
*) echo "WRONG
CHOICE";;
esac
echo "Do you want
to continue?(Y/N)"
read ans
done
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