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

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sydney salvador
sydney salvador 2020-12-13
评论： Walter Roberson 2024-6-5
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 个评论
显示 1更早的评论
Les Beckham
Les Beckham 2020-12-13
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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采纳的回答

Image Analyst
Image Analyst 2020-12-13
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

更多回答（2 个）

mahmoud abdelaal
mahmoud abdelaal 2022-10-3
移动：Image Analyst 2022-10-3
Ran in:
word='si'
word = 'si'
new=replace(word,word(1),upper(word(1)))
new = 'Si'
  1 个评论
Image Analyst
Image Analyst 2022-10-3
Ran in:
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
编辑：Walter Roberson 2024-6-5
Ran in:
Using Pattern https://www.mathworks.com/help/matlab/ref/pattern.html
str = "test";
pat = lineBoundary("start")+lettersPattern(1);
new_str = replace(str,pat,(upper(extract(str,pat))))
new_str = "Test"

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