I have a while loop inside a for loop. If the condition of the while loop is not satisfied, I want to jump directly to the end of the for loop. Could anyone please help?

 t=0:0.5:100;
 for i=1:length(t)
        while(condition1)
           display('Task accomplished')
        end                                  %while loop ends here 
       statement a
       statement b
 end                                         %for loop ends here
 statement c                                 %If condition 1 fails, this is where I want to jump to (directly out of the for loop, irrespective of the value of t)

[Adam Danz]

The while loop will repeat indefinitely until condition1 becomes false unless you have a conditional 'break' embedded within the while loop. In other words, your statement a and statement b will only be executed when condition1 becomes false. The goal here is a bit unclear to me.

[Rik]

I agree with Adam. It seems like you want if instead of while, and that the command you're looking for is break.

[RACHNA DANDWANI]

Thank you. I tried your solution and realised my approach needed correction. My code works fine now.

Answer 1

[Adam Danz]

Statements a and b are necessary in my code to change the condition 1. Hence I want the entire loop to run such that each iteration of the for loop changes the variables in a way that renders condition1 false. As soon as that happens, I'd like to come out of the for loop.

The goal here is still not entirely clear but based on your comment above, as @Rik Wisselink mentioned, it seems like you want a conditional statement in place of the while loop and a while loop in place of the for loop. Does this do what want it to?

t=0:0.5:100;
lengthT = length(t);
i = 0;
while i <= lengthT          
    if condition1
        disp('Task accomplished')
        statement a
        statement b
        i = i+1;
    else
        break  %When condition1 becomes false, here we enter the while-loop
    end
end

% We end up here if condition1 becomes false -OR- when i>lengthT
statement c

[RACHNA DANDWANI]

Thank you. I tried replacing a while loop with an if statement and it served my purpose

Answer 2

[Alpha Bravo]

This is one way to do it.

t=0:0.5:100;
 for i=1:length(t)
        while(condition1)
           display('Task accomplished')
           code                              % do something here to change condition1
        end                                  %while loop ends here 
        if (~condition1)
           break
        end
        statement a
        statement b
 end                                         %for loop ends here
 statement c

[Adam Danz]

This code has the same problem as the original code being discussed in the comment section to the question. In your version of the code, statement a and statement b will never be executed. As long as condition1 is true the code will never escape the while loop. As soon as condition1 becomes false, it exits the while-loop and because of your conditional break, it will always skip the rest of the for-loop.

[RACHNA DANDWANI]

Thank you Alpha Bravo. But I agree with Adam Danz here. Statements a and b are necessary in my code to change the condition 1. Hence I want the entire loop to run such that each iteration of the for loop changes the variables in a way that renders condition1 false. As soon as that happens, I'd like to come out of the for loop.

[Dennis]

If you need statement a/b to change condition1 you need to do that inside your while loop.

I actually just wanted to type a small example, however i noticed that if you want to exit your for loop the moment condition 1 gets false and you change condition 1 inside your while loop, the for loop will only be iterated once.

Maybe you can clarify what you are trying to do?

[RACHNA DANDWANI]

Thank you. The problem is solved by what Rik Wisselink and Adam Danz suggested. Your help is appreciated