Cannot type anything in Command Window after run M.file!

This is my code :

lottery=[1000,500,200,300,0,0,0,0,0,0]

l=length(lottery);

a=zeros(9:10);

for i=1:l

    for j=i+1:l
        a(i,j-1)=lottery(i)+lottery(j);
    end
end
b=a;
count=0;
for m=1:10
    for n=1:9
        for p=0:1-m
            for q=0:1-n
                if a(m+p,n)-b(m,n+q)<=500;
                    count=count+1;
                else
                    count=count+0;
                end
            end
        end
    end
end

After press run button on Blank M-file, I cannot type anything in the command window. The symbol ">>" is disappear.

What did I do wrong ?

Answer 1

[Roger Wohlwend]

You did nothing wrong. When Matlab is busy executing some code it does not allow you to type anything in the command window.

Answer 2

[Andreas Goser]

I wonder if your code runs through. Your example code runs within a couple of milliseconds within my environment. Can you add output for debugging? Like

for m=1:10
m % to Display the Status

and

disp('End')

at the end?

Answer 3

[piggy_jes]

Thank you. I've found the solution.

[Andreas Goser]

To help other users with that effect, it would be great if you can describe the solution.