Plotting curve for the values of for loop

I've written a script that uses a for loop to calculate a specific value. After each loop iteration, the value of the variable is updated. How can I save the variable's value in an array so that I can use it to plot a curve later?

Thanks in advance.

For example, 

N = 1:1:5
for i=1:length(N)
    Performs calculation
    S = output
end

I need to plot (N,S)

Sample test code is attached.

Answer 1

[Walter Roberson]

N = 1:1:5
for i=1:length(N)
    Performs calculation
    S(:,i) = output(:);
end

This will create one column for each entry in N.