#! /bin/bash

# Demonstrate some simple array use
# Calculate the (integer) average of a list of numbers

### set -x
### set -v

declare -ai ages
declare -i num i total avg
read -p "Enter team ages: " -a ages

if (( ${#ages[*]} < 2 )); then
	echo Team too small
	exit 1
fi
num=${#ages[*]}
i=0
total=0
while (( $i < $num )); do
	(( total += ${ages[$i]} ))
	(( i++ ))
done
(( avg = $total / $num ))
printf "For %d team members, average age is %d\n" $num $avg
