How do I replace a word in a string with ****?

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Kratos
Kratos 2015-2-28
编辑： per isakson 2015-3-1
Hello I have a text file where I am supposed to compare the strings in the text file with the words in another text file. After finding the word that I want to replace, how do I replace it? The first thing I did was use strfind to find the word. After that I have to replace the word with **?
str = 'Long day';
word = 'Long';
t = strfind(str, word);
After doing this I get 1. Now how do I change 'Long day' to '**** day'? The word can be of any length, so you may need more ********.
Thank you

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per isakson
per isakson 2015-2-28
编辑：per isakson 2015-2-28
Try
str = strrep( str, 'Long', '****' );
and read strrep, Find and replace substring
  2 个评论
Kratos
Kratos 2015-2-28
I tried this but the thing is the word that I have to replace can be of any length. It could also be 'something' or 'MATLAB' anything.
per isakson
per isakson 2015-3-1
编辑：per isakson 2015-3-1
"can be of any length" &nbsp strrep handles any length of the search and replacement string, respectively. That shouldn't be a problem.
>> str = strrep( 'abcd', 'c', '123456789' )
str =
ab123456789d
"It could also be 'something' or 'MATLAB' anything" &nbsp I guess you need to use string variables instead of static strings.
>> str = 'abcd';
>> s1 = 'c';
>> s2 = '123456789';
>> str = strrep( str, s1, s2 )
str =
ab123456789d
Then there is regexprep, but I don't think you need to use that for your current problem
"I tried this" &nbsp It is neither possible for me to know what you tried nor why you think it was no good.

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