#!/bin/bash
read -p "请输入小于100的整数：" num
if [ $num -eq 1 ];then
  echo "和等于： $num"
sum=0
sum1=0
elif [[ $num -gt 1 && $num -lt 100 ]];then
  for ((i=1; i<=$num; i++))
  do
  a=$[$i % 2]
  if [ $a == 0 ];then
  let sum=$sum+$i
  elif [ $a == 1 ];then
  let sum1=$sum1+$i
  fi
  done
  echo "1到$num的奇数和为: $sum1"
else
  echo "输入错误！"
fi