How to fixed matrix dimensions

Please Fix this error.

Answer 1

[Torsten]

[m,n] = size(A);
Sc = sum(A,1);
Sr = sum(A,2);
if (Sc == ones(1,n)) & (Sr == ones(m,1))
    disp('Correct')
else
    disp('Incorrect')
end

[Md. Mohidul Islam]

It's running on mobile apps but showing the mistake in the computer

[Torsten]

The corrected code above works for me.