Shell Programming and Scripting

#!/bin/bash
echo "Enter the integers you would like to calculate"
read -a nums
echo "You entered ${#nums[@]} integers"
let batch="${#nums[@]}-1"
echo "Enter how you want to calculate these integers ($batch calculations)"
read -a calcs
result="$( paste <( printf "%s\n" ${nums[@]} ) <(printf "%s\n" ${calcs[@]}) )"
echo ${result[@]} =
echo ${result[@]} | bc

#!/bin/bash
echo "Enter the integers you would like to calculate"
read -a nums
echo "You entered ${#nums[@]} integers"
let batch="${#nums[@]}-1"
echo "Enter how you want to calculate these integers ($batch calculations)"
read -a calcs

result=''
for (( i=0; i<=$batch; i++ ))
do
    result=$(echo "$result ${nums[i]} ${calcs[i]}")
done

echo "${result} ="
echo "${result}" | bc

echo "$(( ${result} ))"

echo "scale=2 ; ${result}" | bc