If your lab 3 is a mess due to 10 variable names, consider using an array to solve the problem
Arrays have challenging syntax but it makes an easy solution.
Say you want to load 5 things into variables (100, 75, 100, 90, 85)
Arrays are variables that have multiple values. A spreadsheet is a good example of a two dimensional array. ksh has only one dimensional arrays so they are things like race times per person.
Unlike C++, arrays in ksh are simple and just declared on the fly with [] to indicate which item in the array you are seeing.
For instance, suppose you want to put 5 times into a stack of items:
foo[0]=56
foo[1]=66
foo[2]=71
foo[3]=19
foo[4]=21
All of these things are in a variable named foo which has multiple subfields.
The syntax for retreiving the vals is weird
echo ${foo[4]} will print out 21
So what's the point? Suppose we want to average these things:
Now we can use a loop
for (( k=0;k<5;k++ ))
do
sum+=${foo[k]}
done
echo $(sum/k)