leapyear.sh

#!/bin/bash

leapyear()
{

y=$(( $year % 4 ))

if [ $y -ne 0 ]; then
return 1
else
return 0
fi

}

echo -n  "Enter Year: "
read year

if ! leapyear "$y" ; then
echo "$year is not a leap year! "
exit 1
else
echo "$year is a leap year "
fi
exit 0