#! /bin/bash
echo -n "insert first number: "
read a;
echo -n "insert second number: "
read b;
echo "choose option"
echo "1 - add"
echo "2 - sub"
echo "3 - multiply"
echo "other - exit"
read opcio;
case $opcio in
1)echo "Sum: " $((a+b));;
2)echo "Diff: " $((a-b));;
3)echo "Product: " $((a*b));;
*)echo "wrong input! Exit!"
exit;;
esac
exit 0
