Creating a function to return a string into upper and lower case

2 Ansichten (letzte 30 Tage)
I am trying to create a function where U returns all the characters in the string in uppercase and where L returns all the characters in the string to lowercase. I have created a function however, when I test it in the command window I get no information. Not even an error in my code.
function uppercase_lowercase(x)
U=lower(x);
L=upper(x);
end

Akzeptierte Antwort

Rik
Rik am 29 Okt. 2019
Matlab did exactly what you asked: you wrote a function with an input, but without an output. I you open this in the Matlab editor, the m-lint will give you a warning, explaining that it looks like you aren't doing anything with the variables U and L. If you want them as outputs, make sure to included that in your function header:
function [U,L]=uppercase_lowercase(x)
U=lower(x);
L=upper(x);
end
Your function is also missing a header line, documentation (including usage examples), comments, and input checking. For such a tiny wrapper function the header line would probably do.
  4 Kommentare
Rik
Rik am 29 Okt. 2019
@Britnie: The same way you do it for every other function with multiple outputs, write the line below in you command window:
[A,B]=uppercase_lowercase('now is tHe Time for aLL gOod');
@Steven: thank you for adding the doc link. I tend to avoid emphasizing that those parts are optional. But maybe in this case I was a bit too zealous when I described them as 'missing'.

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)

Kategorien

Mehr zu Characters and Strings finden Sie in Help Center und File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by