I got this M-File and I need to look for the errors (theres 4 of them) for the file to function properly

Code:`function [c,d]=errors(x)`

%This function file generates a matrix d of which the elements

%are the elements of x minus 1. At the same time it generates a

%value c indicating how often the function file has gone through

%the second for loop.

[p,q]=size(x)

for a=1:q

for b=1:p

d(a,b)=x(a,b)-1;

c=c+1;

end