write string in text file

How can I write some strings in text file (each strinng in one line)? example:

Happy

New

Year

Answer 1

[Image Analyst]

Try this:

fid = fopen('ny.txt','wt');
fprintf(fid, 'Happy\nNew\nYear');
fclose(fid);

[Image Analyst]

Or, if your strings are in variables,

fid = fopen('ny.txt','wt');
fprintf(fid, '%s\n%s\n%s', string1, string2, string3);
fclose(fid);

[Ronaldo]

The last line must be changed to:

fclose(fid);

[Image Analyst]

Right Ronaldo - thanks for noticing and correcting. I've edited and corrected.

Answer 2

[cui,xingxing]

hi, if you use latest matlab 2022a， you can use new matlab build-in function WRITELINES

Answer 3

[Walter Roberson]

fid = fopen('ny.txt','wt');
fprintf(fid, 'Happy\New\n');
fprintf(fid,, 'Year\n');
fclose(fid)

[Ronaldo]

What I see in the text file is

HappyYear

What I want to see is

Happy

Year

[Ronaldo]

The correct one is

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

fprintf(fid, 'Happy\n');

fprintf(fid, 'New\n');

fprintf(fid, 'Year\n');

fclose(fid)

Anyway, so many thanks for your great help.

Answer 4

[Dinesh Satelkar]

How i can write extracted text in text file

[Image Analyst]

With fprintf().

Answer 5

[Ali]

Is there a way to use save function to do that simple job? I could never get why an intuitive write in matlab needs such an un-intuitive function F-Print-F.

[Image Analyst]

That's just the name of it. It matches the name used in other languages like C, Java, etc. The save() function does not write custom formatted strings out to a text file like fprintf() does. The save() function saves variables in a binary, proprietary fashion.

Answer 6

[Ali]

Thanks for the comments. Save has a -ascii option which is supposed to do what I need. But now that you know about matlab, could you please comment on my question here: write multiple lines of text into a text file ?

[Walter Roberson]

https://www.mathworks.com/help/matlab/ref/save.html#inputarg_fmt

"Each variable must be a two-dimensional double array."

Character strings are not double array. double() of the string is done internally and that is written, getting back results such as

   1.0400000e+02   1.0100000e+02   1.0800000e+02   1.0800000e+02   1.1100000e+02   9.2000000e+01   1.1000000e+02   1.1900000e+02   1.1100000e+02   1.1400000e+02   1.0800000e+02   1.0000000e+02

for 'hello\nworld'