I want t write a number to a file
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I want to do this:
fOutput = fopen('test.txt','wt');
fprintf(fOutput,'%5.2d',22.56);
fclose(fOutput);
but the txt file is empty after doing this
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Accepted Answer
Voss
on 2 Apr 2022
It seems to work ok here:
fOutput = fopen('test.txt','wt');
fprintf(fOutput,'%5.2d',22.56);
fclose(fOutput);
ls *.txt
type test.txt
It could be that too many files are open already, e.g., because of code that has previously been run.
You can do fclose all to close all open files and then try to write to test.txt again.
2 Comments
Voss
on 2 Apr 2022
%5.2d
% ^ beginning of formatted text signifier
% ^ 5 characters wide (total width)
% ^^ 2 characters after the decimal point (precision)
% ^ decimal number
%5.2f
% ^ floating-point number
fprintf(1,'%5.2d',22.56)
fprintf(1,'%5.2f',22.56)
More information about formatted text: https://www.mathworks.com/help/matlab/matlab_prog/formatting-strings.html
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