exit from a nested loop

Hi guys I have a problem with a inner loop:

Once the break command is read I correctly exit from the inner while loop but afterwards it does not increment i and consequently I cannot re-entering in the while loop.

How can I do that?

I guess break it is not the right command

for i=1:length(A)
    counter2=0; 
    Xtot2=0;
    Ytot2=0;
    Xmean2 = 0;
    Ymean2 = 0;
    j=1;
    while j <= length(F2)
        if statement 
            break 
        end
        if statement 
           counter2= counter2+1;
           Xtot2= Xtot2 + F2{j,3};
           Ytot2= Ytot2 + F2{j,4};
           Xmean2 = (Xtot2/counter2); 
           Ymean2= (Ytot2/counter2); 
           H12{i,6}= Xmean2; 
           H12{i,7}= Ymean2;
        end
    end
end

[Julius Muschaweck]

You may have another problem:

for i = 1:3
    j = 0;
    fprintf('i == %g\n',i);
    while j <= i
        j = j + 1;
        fprintf('j == %g\n',j);
        if j == 2
            fprintf('break\n',j);
            break
        end
    end
end

correctly tells me

i == 1

j == 1

j == 2

break

i == 2

j == 1

j == 2

break

i == 3

j == 1

j == 2

break

[Riccardo Tronconi]

Yes! that's what I'm looking for!!

The other problem is that counter2 never returns to 0 whenever "break" command is read...

If I copy and past my code would you mind try to run on your side?

Answer 1

[Jan]

"I correctly exit from the inner while loop but afterwards it does not increment i"

Why do you assume this? The outer loop is not influenced by breaking the inner loop.

"counter2 never returns to 0 whenever "break" command is read..."

Of course the break command breaks the inner loop and does not reset counter2 to 0. But this reset is does, when the outer loop runs its next iteration.

As far as I can see, your assumptions are not correct. USe the debugger to step through your code line by line to see, what's going on.

Note that your inner loop does not increment j anywhere. Therefore the condition "while j <= length(F2)" does not seem to be correct.