Find the value of 1+2+3+4+...... taken as command line arguments

Find the value of 1+2+3+4+...... taken as command line arguments


Shell Script:

clear
str=$1
IFS=+
set $str
n=$#
s=0
for((i=1;i<=$n;i++))
do
s=`expr $s + $1`
shift 1
done
echo the summation is $s

OUTPUT:

[csma@localhost ~]$ sh addifs.sh 1+2+4+5
the summation is 12