I'm quite new to Matlab and programming in general and would love to get some help with the following. I've look here on the website, but couldn't find an answer.

I am trying to use a for-loop and fprintf to give me a bunch of separate text files, whose file names contain the index I use for my for-loop. See for example this piece of code to get the idea of what I'd like to do:

for z=1:20
    for x=1:z;
        b=[x exp(x)];
        fid = fopen('table z.txt','a');
        fprintf(fid,'%6.2f, %6.2f\n',b);
        fclose(fid);
    end
end

What I'm looking for, is a script that (in this case) gives me 20 separate .txt files with names 'table i.txt' (i is 1 through 20) where table 1.txt only contains [1, exp(1)], table 2.txt contains [1, exp(1)] \newline [2, exp(2)] and so on.

If I run the script above, I get only one text file (named 'table z.txt' with all the data appended underneath. So the naming of fopen doesn't 'feel' the z values, but interprets z as a letter (which, seeing the quotation marks doesn't really surprise me)

I think there must be an elegant way of doing this, but I haven't been able to find it. I hope someone can help. Best, L

use num2str and string concatenation [ ... ].

fid = fopen( ['table ' num2str(z) '.txt'],'a');