Do while loop in Matlab
1,361 views (last 30 days)
Show older comments
Could you please let me know the Matlab code that is similar to C++ code as shown below:
do {
<your calculations>
} while (abs(A - B) <= 50)
Thanks
2 Comments
Jan
on 9 Feb 2014
This is no valid C++syntax. Do you mean:
do {
<your calculations>
} while (abs(A - B) <= 50)
Accepted Answer
Mischa Kim
on 9 Feb 2014
Edited: MathWorks Support Team
on 27 Nov 2018
There is no 1-to-1 correspondence to the C++ do while loop in MATLAB. Your best option is to use a while loop. The difference is that while loops check the condition at the beginning of the loop while do while loops check the condition at the end of the loop.
while (abs(A-B) <= 50)
...
end
To check the condition at the end of the loop using a while loop, use an if statement inside the while loop:
while 1
<your calculations>
if ~(abs(A - B) <= 50)
break;
end
end
2 Comments
Image Analyst
on 9 Feb 2014
Please mark his answer as "Accepted" so we know that we don't need to look at it anymore and he gets credit for it.
More Answers (3)
Jos (10584)
on 9 Feb 2014
A do-while loop in disguise:
while true
% statements here
% if ~WhileCondition, break ; end
end
or
3 Comments
Seyedeh Razieh Hosseini
on 5 Jan 2019
The problem here is that you have to calculate twice. our calculation have to be done once before the loop and again inside the loop. that leads to repetition of a part of a code. what should we do in such a case?
David Michelman
on 1 May 2020
How so? Since do always starts out as true, you only have to write out the calculation once?
Marco Ottina
on 15 Dec 2022
My suggestion is using the following pattern:
canContinue = true;
while canContinue
% do your code here
canContinue = condition_of_the_do_while ; % insert here your condition
end
0 Comments
Vigneshwar Pesaru
on 17 Sep 2017
Hi!!!
There is no 'do while' loop in MATLAB in fact you can perform the similar action using 'while' which is powerful in MATLAB
1 Comment
P Richards
on 23 Jul 2019
IHMO The absence of do while makes some coding more difficult than it needs to be:
do
theConditionStillExists=attemptToFixIt();
while theConditionStillExists
See Also
Categories
Find more on Loops and Conditional Statements in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!