Math Calculator

Basic Math Calculator

#!/bin/bash

echo "**** My calculator ****"

echo "M A I N - M E N U"

echo "1. Addition"

echo "2. Multiplication"

echo "3. Subtraction"

echo "4. Remainder"

echo "5. Divide"

echo -n "Please select your choice (1-5) : "

read choice

echo -n "Enter your first number : "

read n1

echo -n "Enter your second number : "

read n2

if [ $choice -eq 1 ]

then

        answer="$n1 + $n2 = $(( $n1 + $n2 ))"

elif [ $choice -eq 2 ]

then

        answer="$n1 x $n2 = $(( $n1 * $n2 ))"

elif [ $choice -eq 3 ]

then

        answer="$n1 - $n2 = $(( $n1 - $n2 ))"

elif [ $choice -eq 4 ]

then

        answer="$n1 % $n2 = $(( $n1 % $n2 ))"

elif [ $choice -eq 5 ]

then

        answer="$n1 / $n2 = $(( $n1 / $n2 ))"

else

        echo "Sorry please select number between 1-5 only"

        exit 1

fi

echo $answer