Replace each characters of strings with '-'

Hi, I want to replace all the characters of a string by '-', say, flowers will be like '-------'. Please tell me how am I supposed to do that. I am totally new to matlab. As a beginner I've done this so far.

%Select a word
B='skyyiy'
%input letter
c='y'
%stringlength
l=strlength(B)
%indices of letters occurring
d=strfind(B,c)
newStr=strrep(B,c,'-')

[KSSV]

It is working fine right????_y_ is replaced by '_'....what you expect?

[Suresh Dahal]

yes but when I try to replace whole word 'skyyiy' by newStr=strrep(B,B,'-') it shows only '-' not '------', why's that I am not sure. I want to replace whole word with ---- at on instance.

Answer 1

[KL]

if you've no conditions but just to have the same length as the old string then maybe something like

>> B='skyyiy'
newStr = B;
newStr(1:end) = '-'

B =

      'skyyiy'

newStr =

    '------'

Answer 2

[Walter Roberson]

regexprep(B, c, '-')

or

B(B==c) = '_';

[Suresh Dahal]

the first one replaces only y from the string, but I want to replace all the letters with '------' sign

[Walter Roberson]

B(:) = '-';

[Jan]

+1 for the last comment.