#!/bin/bash
#

#定义两个变量用于存放奇数和偶数的和
declare -i EVENSUM=0
declare -i OLDSUM=0

for i in {1..100};
do
  #通过取余的方法判断是否为偶数
  if [ $[$i%2] -eq 0 ];
  then
    let OLDSUM+=$i
  else
    let EVENSUM+=$i
  fi
done
echo "EVENSUM:$EVENSUM,OLDSUM：$OLDSUM"