How to combine cells with a matrix?

I want to extract 6 lines from a ascii file, and add these lines into another text file which just contains a matrix, like 500*500.

Now, I extract the first 6 lines from the ascii file:

%% extract title for the new ascii file
fid = fopen('filename','r')
numLines = 6; % I knew there are 6 lines I need
title = cell(numLines,1);
for ii = 1:numLines
    title(ii) = {fgetl(fid)};
end
fclose(fid); 

Q1: how to combine these lines with another matrix to generate a new text file?

Q2: how to output this new text file?

Any help would be appreciated.

Answer 1

[KSSV]

Read about fprintf and dlmwrite. First write the text lines and then write the matrix.

[rui gao]

Could you please comment more on this question, I do appreciate it.

The title should be like this:

and honestly, this text file contains a matrix, which is a 5000*5000. (So, one of my thought is whether I can replace this 5000*5000 matrix only by another 5000*5000 matrix, and then output this new hybrid text?)

Another text file just contains a 5000*5000 matrix.

[rui gao]

Yeah, it seems that what you (KSSV) said is the only way to address the problem.

Now, the problem has been solved by your thought.

Thanks again.