Add a loop and create .txt files.

Hello,

I have a question about a code.

Well, my code creates by a loop multiple .txt files with specific name and format, if I use one loop in order to make my calculations. But, I would like to add one more loop in order to make my code better.

I am giving you my code here:

name=regexp(fileread('names.txt'), '\r?\n', 'split') .';
file1=regexp(fileread('data.txt'), '\r?\n', 'split') .';
.....
    

for n=1:numel(name);

    for z=1:size(file1)
    ........ %making caluclations
        
    FP=fopen(sprintf('mR%g0.txt',z),'wt');
    fprintf(FP,'%s\t',file1{z},num2str(number),num2str(number);  
    fclose(FP);
    
    txtFiles = dir('mR*.txt') ;  % get the text files in the present folder 
    N = length(txtFiles) ;      % Total number of text files 
    iwant = cell(N,1) ;         % initlaize the data required 
    % loop for each file 
    for i = 1:N
    thisFile = txtFiles(i).name ;
    iwant{i} = importdata(thisFile) ;  % read data of the text file 
    end
    iwant = cell2mat(iwant) ;
    
    outFile = strcat('finalR',num2str(n),'.txt') ;  
    dlmwrite(outFile,iwant,'delimiter','\t')
   
    end
end

My code:

1)creates multiple mR.txt files

2)merge all multiple mR.txt files into one file, called finalR.txt

So I would like to add a for loop, which:

1) will read a file (lets call it "file2.txt") with multpile lines

2)Creates for each iteration of file2.txt mulptle files( eg M_1mR*.txt for the first iteration, M2_mR*txt for the second iteration etc)

3)Merges files M_1mR*.txt to one file , M_2mR*.txt to one file etc.

I have tried these:

      for w=1:size(file1)
for z=1:size(file1) 
    .......

txtFiles = dir('M_*',w,'mR*.txt',z) ;  % get the text files in the present folder 

end
end

but it didn't work...

Could anyone help me?