TheWorldOfNumbers.sh

#Given two integers, X and Y, find their sum, difference, product, and quotient.

#CONSTRAINTS
# -100 <= X,Y <= 100
# Y != 0

read number1

if (( number1 < -100 || number1 > 100)); then
    exit
fi


read number2
if (( number2 < -100 || number2 > 100)); then
    exit 1
elif ((number2 == 0)); then
    exit 1
fi

echo $(( number1 + number2 ))
echo $(( number1 - number2 ))
echo $(( number1 * number2 ))
echo $(( number1 / number2 ))

# The codes below were mine and they gave the exact same output as the problem requested.
# However it didn't pass the first 2 test cases even though the requirement were met. Weird...
# expr $number1 + $number2
# expr $number1 - $number2
# expr $number1 \* $number2
# expr $number1 / $number2