fprintf output line break

1,045 次查看(过去 30 天)
Hi all,
I am writing a code where under a string is generated and stored in an array.
After the array is stored, I use fprintf to write the array into an data file, and then later on the string within the array is replaced within a new string and the cycle repeats.
The problem I am having is that I have been unable to make each fprintf cmd to print in a new line in the output file so I get something looking like this:
dataline dataline dataline dataline dataline dataline dataline
...instead of this:
dataline
dataline
dataline
dataline
dataline
I've been tinkering with formatting but I still can't get it right. Can any one help me?
Thanks!!!
  1 个评论
Joao Linhares
Joao Linhares 2016-11-10
On my side it worked by:
fprintf(fid, '%s', thestring);
fprintf(fid,'\n');
So basically if you split the code it works better.
Cheers

请先登录,再进行评论。

采纳的回答

Walter Roberson
Walter Roberson 2012-8-4
fprintf(fid, '%s\n', TheString);
  3 个评论
Walter Roberson
Walter Roberson 2019-2-22
On Windows, when you fopen() your file then use 'wt' instead of just 'w' to force CR+NL to be output instead of just NL

请先登录,再进行评论。

更多回答(4 个)

Image Analyst
Image Analyst 2012-8-4
Try
fprintf(fid, '%s\n\r', TheString);
If that doesn't work try it with the n and r reversed.
fprintf(fid, '%s\r\n', TheString);
One of them should work.
  1 个评论
LeChat
LeChat 2021-8-17
Thank you!
fprintf(fid, '%s\r\n', TheString);
worked for me (Matlab 2021a on Windows).

请先登录,再进行评论。


Matthew Cooper
Matthew Cooper 2019-2-21
If you are writing to a file recursively, you may need to substitute 'a' for 'w' on fopen:
fopen(fid,'foo.txt','w');
fprintf(fid,formatspec,text);
fclose(fid);
fopen(fid,'foo.txt','a');
fprintf(fid,formatspec,newtext);
  2 个评论
Matthew Cooper
Matthew Cooper 2019-2-22
Can you suggest a better thread for my contribution? When you invert my answer for a question and ask it, you arrive here. It would have helped me, I am sure it will help someone else. Your clarification is also helpful. Cheers.

请先登录,再进行评论。


Samu TanakaBlitch
Samu TanakaBlitch 2016-4-22
I was having the same issue earlier today when i was writing the code and other solutions i found on the internet was not working so i just inserted a disp('"space"') to make it push to the next line.
(earlier it was like this)
(afterwards)
(example of working one)
fprintf( 'The peak resultant head acceleration experienced in the TC-14 crash test is %4.2f g.',peak)
disp(' ')
fprintf('The peak resultant head acceleration experienced in the HCR-16 crash test is %4.2f g.',peakhcr)
disp(' ')
fprintf('The peak resultant head acceleration experienced in the FF-15 crash test is %4.2f g.',peakff)
  1 个评论
Walter Roberson
Walter Roberson 2016-4-22
You should have just put in \n
fprintf( 'The peak resultant head acceleration experienced in the TC-14 crash test is %4.2f g.\n',peak)

请先登录,再进行评论。


Christine Itchon
Christine Itchon 2020-6-19
What do you think would happen if the newline character were omitted from the fprintf statement below?
>> fprintf(‘The value is %d, for sure!\n’,4^3)
  1 个评论
Image Analyst
Image Analyst 2020-6-19
Go ahead and try it.
>> fprintf('The value is %d, for sure!\n',4^3)
The value is 64, for sure!
>> fprintf('The value is %d, for sure!',4^3)
The value is 64, for sure!>>
As you can see if the final newline is omitted, the >> prompt does not happen on the next line. It happens on the same line.

请先登录,再进行评论。

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by