Hello, I am new to shell scripting so this might be a simple question...also, please excuse me if this is a topic discussed before.

I have declared a bunch of variables as such:
Host_1=32
Host_2=33
Host_3=34
temp=1
numUsers=4

Now, I am trying to go through a loop to access each of these variables. I have established a while loop like so:

while [ $temp -le numUsers]
do
echo "Host 1 = $Host_"$temp""
temp='expr $temp + 1'
done

Now this obviously is incorrect, as it looks for a variable called Host_ and doesn't find it, leaving me with only the value of temp being printed. Is there a way to have it so Host_1 is printed with temp=1? I looked into using an array but I figure there might be a quick solution to this.