#!/bin/sh

# Digits.sh
# Sun Jun  8 02:23:21 PDT 2008
# Chieh Cheng
# http://www.CynosureX.com/

# GNU General Public License (GPL) Version 2, June 1991

scriptName=`basename "$0"`

usage ()
{
  echo "   Usage: ${scriptName} number"
}

if [ $# -eq 1 ]
then
  num=$1
  digits=0

  result=`IsDiscreteNumber.sh ${num}`
  if [ ${result} -eq 1 ]
  then
    while [ ${num} -gt 10 ]
    do
      num=`expr ${num} / 10`
      digits=`expr ${digits} + 1`
    done

    digits=`expr ${digits} + 1`
    echo ${digits}
  else
    echo "${num} is not a discrete number."
  fi
else
  usage
fi