I am trying to write a matlab function that that takes a matrix as input and test if that matrix is a square(using a sub-function) and if it is a square it must test if it meets a certain condition. Here is my code

function [a,b] = matr(A) 
[a,b]=size(A)
d=diag(A)
S=sum(d==0)
Results = tests(a,b)
if S>0.5*length(d)
    RT1=1
    disp('The matrix is a Romanov type 1.\n')
else 
    RT1=0
    disp('The matrix is not Ramanov type 1.\n')
end
end 

function test = tests(a,b)
if a==b 
    d=diag(A);
    S = sum(d==0)
    disp('The matrix is a square matrix.\n')
end  
end

[Catalytic]

And what is your question?