MATLAB: How to save a series of variables in workspace to a txt file

for loopfprintftxt

Hi all,
I want to save a bunch of variables (data1, data2 etc) to a textfile (alldata.txt). The code below is a simplified version but it makes the problem clear, since the saved data in the textfile is not correct.
    data1 = 1
    data2 = 2
    data7 = 3
    data10 = 5
    for i = 1:10
        try
        fid = fopen('alldata.txt','w');
        x = (sprintf('data%d', i));
        fprintf(fid,'%d\n',x);
        fclose(fid);
        catch
            continue;
        end
    end
Tthis is the output in alldata.txt, which is wrong:
100
97
116
97
49
48
Is there anybody who can help me?
ps. I dont want to make use of the option: save() with the -ascii flag, because I want to be able to do some text formatting.
Related Question