Multiple variable using array in for loop; cPanel user IP address change

I always wonder how to assign multiple variables in for loop. Suppose I want to change the IP address of some users listed.


[root@server4 ~]# cat test1
user1
user2
user3
user4
user5

[root@server4 ~]# cat test2

190.10.20.1

20.1.1.2

30.12.13.13

13.23.23.12

32.12.12.1

test1 are my users and test2 contains IP address that I want to assign

[root@server4 ~]# xargs < test1

user1 user2 user3 user4 user5

[root@server4 ~]# xargs < test2

190.10.20.1 20.1.1.2 30.12.13.13 13.23.23.12 32.12.12.1

Now I am going define array

[root@server4 ~]# a=(user1 user2 user3 user4 user5)

[root@server4 ~]# b=(190.10.20.1 20.1.1.2 30.12.13.13 13.23.23.12 32.12.12.1)

[root@server4 ~]# c=${#a[@]}  #length of array

Lets see if it works

[root@server4 ~]# for ((i=0;i<c;i++));do echo "${a[i]} ${b[i]}"; done

user1 190.10.20.1

user2 20.1.1.2

user3 30.12.13.13

user4 13.23.23.12

user5 32.12.12.1

what if we implement this in 

[root@server4 ~]# for ((i=0;i<c;i++));do /usr/local/cpanel/bin/setsiteip ${a[i]} ${b[i]};done

let me test and will let you know.  Please let me know if you have any other simple shortcuts.