1-100脚本求和

最新推荐文章于 2022-01-30 14:30:23 发布

老赵学coding

最新推荐文章于 2022-01-30 14:30:23 发布

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文章标签： bash 开发语言

本文链接：https://blog.youkuaiyun.com/Stephencurr/article/details/120974446

版权

一、for循环

#!/bin/bash
sum=o
for ((i=0;i<=100;i++))
do 
sum=$[sum+i]
done
echo "100以内的求和：$sum"

[root@localhost ky15]# cat 8.sh
#!/bin/bash
sum=o
for ((i=0;i<=100;i++))
do 
sum=$[sum+i]
done
echo "100以内的求和：$sum"
[root@localhost ky15]# sh 8.sh
100以内的求和：5050

二、while循环

#/bin/bash
i=1
sum=0
while [ $i -le 100 ]
do
  sum=$[sum +i]
  let i++
done
echo "{1..100}的求和结果为：$sum"

[root@localhost ky15]# cat 8.sh
#/bin/bash
i=1
sum=0
while [ $i -le 100 ]
do
  sum=$[sum +i]
  let i++
done
echo "{1..100}的求和结果为：$sum"
[root@localhost ky15]# sh 8.sh
{1..100}的求和结果为：5050

三、until循环

#!/bin/bash
i=0
sum=0
until [ $i -gt 100 ]
  do
   sum=$[sum+i]
  let  i++
done
echo "{1..100}求和结果：$sum"

[root@localhost ky15]# cat 8.sh
#!/bin/bash
i=0
sum=0
until [ $i -gt 100 ]
  do
   sum=$[sum+i]
  let  i++
done
echo "{1..100}求和结果：$sum"
[root@localhost ky15]# sh 8.sh
{1..100}求和结果：5050