how to create multiple blank txt files in a folder

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Jin 2012-4-25

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https://ww2.mathworks.cn/matlabcentral/answers/36466-how-to-create-multiple-blank-txt-files-in-a-folder

评论： Walter Roberson 2020-2-4

suppose I want to create 100 blank txt files and name them as file1.txt, file2.txt .... , how to write the command

I tried to write a loop and use fopen with option w+, does not work

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Jan 2012-4-25

"Does not work" is not useful to describe a problem in a forum. Please add any details: Does your program fail? With an error message? Which line? Post the relevant part of the code. Or does the result differ from your expectations? Perhaps you do not have write access for this folder? Or the drive is full?

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Answer 1

Matthew 2012-4-25

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https://ww2.mathworks.cn/matlabcentral/answers/36466-how-to-create-multiple-blank-txt-files-in-a-folder#answer_45607

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Hi Jin,

You could use something like

    for ii = 1:100
      file_name = ['file' sprintf('%1.0f',ii) '.txt'];
      fopen(file_name,'w+');
    end

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Divy Gupta 2020-2-3

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I wanted to write after fopen using fprintf but in the files data was not available.I write something like

    for ii = 1:100
      file_name = ['file' sprintf('%1.0f',ii) '.txt'];
      fopen(file_name,'w+');
      fprintf(file_name, '%d', myarrray); 
    end

Walter Roberson 2020-2-4

在 MATLAB Online 中打开

You did not remember to fclose and you do not use file identifiers properly. The contents of a file are not guaranteed to be completely written to disc until the fclose() has finished.

    for ii = 1:100
      file_name = sprintf('file%d.txt',ii);
      fid = fopen(file_name,'w+');
      fprintf(fid, '%d ', myarrray);   %you need a delimiter or the numbers will run together
      fprintf(fid, '\n');
      fclose(fid)
    end