How to convert and display numbers into strings

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INTRODUCTION: Hi, I make a string concatenation using alpha and numerical characters
['K=' num2str(k)]
Thus, using the loop below
for k=998:1001
['K=' num2str(k)]
I obtain the following strings K=998, K=999, K=1000, K=1001
which I use elsewhere.
PROBLEM/WISH: I would like TO ADD ONE ZERO BEFORE the number as below:
K=0998, K=0999, K=1000, K=1001
and I would like TO ADD TWO ZEROS if k<100, and THREE ZEROS if k<10
I wonder if someone could help to fix this problem.
Thank you Emerson

Accepted Answer

David Sanchez
David Sanchez on 23 Jul 2013
for k=1:1000
if k<10
tmp_str = 'K=000';
elseif k<100
tmp_str = 'K=00';
elseif k>=100 && k<1000
tmp_str = 'K=0';
tmp_str = 'K=';
[tmp_str num2str(k)]
  1 Comment
Emerson De Souza
Emerson De Souza on 23 Jul 2013
Thank you David, your suggestion fixed the problem.

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