How to Change the first letter of a string to capital case and the rest to lowercase

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impropermsg = input('Enter the sentence : \n', 's');
function propermsg = changemsg(impropermsg)
propermsg = strcat(upper(impropermsg(1)),lower(impropermsg(2:end)));
end
% The user can input but nothing happens
  3 Comments
Les Beckham
Les Beckham on 13 Dec 2020
You created a function that looks like it will do what you want but (at least in the code you posted) you never called the function.
You could just eliminate the 2nd and 4th lines of this code and you will have a simple two line script that does what you want (with the answer being in the propermsg string). If you want the result to be displayed, just take the semicolon off of the end of the propermsg = ... line.

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Accepted Answer

Image Analyst
Image Analyst on 13 Dec 2020
Make a script called something like test.m, and put this into it:
impropermsg = input('Enter the sentence : \n', 's');
% Now call the function:
propermsg = changemsg(impropermsg);
fprintf('The result is "%s"\n', propermsg);
function propermsg = changemsg(impropermsg)
propermsg = strcat(upper(impropermsg(1)),lower(impropermsg(2:end)));
end

More Answers (2)

mahmoud abdelaal
mahmoud abdelaal on 3 Oct 2022
Moved: Image Analyst on 3 Oct 2022
word='si'
word = 'si'
new=replace(word,word(1),upper(word(1)))
new = 'Si'
  1 Comment
Image Analyst
Image Analyst on 3 Oct 2022
That doesn't replace the rest with lower case like requested:
word='siUPPERCASE'
word = 'siUPPERCASE'
new=replace(word,word(1),upper(word(1)))
new = 'SiUPPERCASE'
You'd need to add this line:
new = replace(new, word(2:end), lower(word(2:end)))
new = 'Siuppercase'

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Toshiaki Takeuchi
Toshiaki Takeuchi on 4 Jun 2024
Edited: Walter Roberson on 5 Jun 2024
str = "test";
pat = lineBoundary("start")+lettersPattern(1);
new_str = replace(str,pat,(upper(extract(str,pat))))
new_str = "Test"

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