Write a .txt file

I have information like:

Coisas

      X 3.16
      Y 1.53
      Z 0.000000Lat 0.000000Long

Cenas

      X 275.30
      Y 0.00
      Z 142.43
      K 0.000000 0.000000
      T 43.734380 7.421440

How can I write this in a file.txt to apear like I have hear. I have already all the fprintf. But when I put to fid it stay different.

And this file need to be rewrite again, i will add info like that.

It´s like I open the file and write this and i close. then I want to open again e write more info. How can I do that. It dissapear all the previous info.

Thanks

Answer 1

[Walter Roberson]

When you first create the file,

fid = fopen('Yourfile.txt', 'wt');

Each time you want to add something to it after having already closed it,

fid = fopen('Yourfile.txt', 'at');

[5mid]

Yes it helps. But how can I put the text file in that structure. I appears all in one line.

Thanks

[Walter Roberson]

Are you forgetting to send the \n ?

fprintf(fid, 'line1\nline2\n')

Or did you miss the 't' part of the 'wt' and 'at' and you are opening the file through Notepad (not Notepad+) ?

[5mid]

I didn´t know that. I thought I could use \n on files too.

[5mid]

I found my problem.

Thanks

[Walter Roberson]

Yes, you use \n in files. But when you write something to a file and then close it, there is no \n automatically added: opening for append and writing something else would continue the exact same line.