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Simple question loop for

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Laurie
Laurie 2020-10-19
关闭： MATLAB Answer Bot 2021-8-20
Hello,
It's a very basic question because I'm new in the world of Matlab.
I want to know what happend when there is a for loop like this :
for i = 1:n
% Inside of the loop
end
but n = 0
Does it enter the loop or not at all ?
Thank you,
Laurie

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回答（2 个）

KSSV
KSSV 2020-10-19
编辑：KSSV 2020-10-19
Lear debugging code. It will be help ful for you and easy.
https://in.mathworks.com/help/matlab/matlab_prog/debugging-process-and-features.html
If n = 0, it will not enter the loop.
n = 0 ;
for i = 1:n
fprintf("%d\n",i) % this will print index i to verify
end
Asad (Mehrzad) Khoddam
You can simply add a disp command to see that nothing will be printed when n=0. It means that the statements inside the loop will not be executed.
n=0;
for i = 1:n
% test
disp(i);
% Inside of the loop
end
  1 个评论
Laurie
Laurie 2020-10-19
Thank you very much for your reply !

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