階乘循環--函數定義、函數調用

#! /bin/bash

# using recursion

function factorial()

{

   if [ $1 -eq 1 ]; then

    echo 1

    else

    local temp=$[ $1 -1 ]

    local result=`factorial $temp`

    echo $[ $result * $1]

   fi 

}

read -p "Enter value:" value

result=`factorial $value`

echo "The factorial of $value is:$result"