Add a large number of comma separated numbers to a txt file
3 views (last 30 days)
Show older comments
I have a .txt file that has two columns. It looks like this
Age 3
Salary 52661
Average working hours 40
Conditions 1, 26, 65, 89, 20, 2, 2
I would like to add a row
Favorite numbers 2, 8, 66
Birdman has given an answer to this question in another topic.
fid=fopen('data.txt','a+');
fprintf(fid,'\n%s %d, %d, %d\n',"Favorite numbers",2,8,66);
fclose(fid)
Unfortnuately I forgot to add that the amount of doubles (in my case "favorite number"s) can be humongous (hundreds of numbers).
Is there a way to get the %d multiple times in the code without typing it out hundred of times.
I tried
a='%d, ';
rep=repmat(a,1,k) %k being the number of favorite numbers
fprintf([fid,'\n%s ' rep ' \n','Favorite numbers', vector_with_numbers]);
this doesn't work, just prints rep. Any ideas?
0 Comments
Accepted Answer
Fangjun Jiang
on 28 Feb 2018
Edited: Fangjun Jiang
on 28 Feb 2018
%d can be used repeatedly automatically, run this to see the effect:
fprintf(1,'\n%s ',"favorite numbers");
fprintf(1,',%d',1:20);
fprintf(1,'\n');
3 Comments
Fangjun Jiang
on 28 Feb 2018
Edited: Fangjun Jiang
on 28 Feb 2018
See the update. Add spaces in
'\n%s '
as you want.
More Answers (0)
See Also
Categories
Find more on Programmatic Model Editing in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!