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Lab - Arithmetic Operations

Solutions to practice test - Arithmetic Operations

  • Check the solution at /tmp/assets/calculation-answer.sh

    Details 
    bob@caleston-lp10:~$ cat calculation.sh
A=20
B=10

echo "Sum is $(( A + B))"
echo "Difference is $(( A - B))"
echo "Product is $(( A * B))"
echo "Quotient is $(( A / B))"

    $ bash calculation.sh

  • Check the solution at /tmp/assets/calculation-answer-2.sh

    Details 
    bob@caleston-lp10:~$ cat calculation.shA=$1
B=$2

echo "Sum is $(( A + B))"
echo "Difference is $(( A - B))"
echo "Product is $(( A * B))"
echo "Quotient is $(( A / B))"

  • Check the solution at /tmp/assets/calculate-price.sh

    Details 
    bob@caleston-lp10:~$ cat calculate-price.sh
price=$(( $1 * $2 ))

echo "The total price for items is ${price} dollars"

  • The "*" should be escaped as "*" for multiplication using expr statement.

    Details ``` $ cat calculate-total-apples.sh baskets=4 apples_per_basket=5 total_apples=`expr $baskets \* $apples_per_basket` echo "Total Apples = $total_apples" ```

  • Answer script: /tmp/assets/calculate-average-answer.sh

    Details 
    $ cat calculate-average.sh
  num1=$1
  num2=$2
  num3=$3
  sum=$(( num1 + num2 + num3 ))
  average=$(echo "$sum / 3" | bc -l)