#!/bin/bash
n=0
while [ $n -lt 1 ]
do
read "please input a number ,it must greater than "1":" n
done
sum=0
for i in `seq 1 $n`
do
sum=$[$i+$sum]
done
echo $sum
转载于:https://blog.51cto.com/68686789/1690636
#!/bin/bash
n=0
while [ $n -lt 1 ]
do
read "please input a number ,it must greater than "1":" n
done
sum=0
for i in `seq 1 $n`
do
sum=$[$i+$sum]
done
echo $sum
转载于:https://blog.51cto.com/68686789/1690636