determinan matriks program matlab

clc;
clear all;

A=input ('masukkan matriks:');
m = length (A);

for k = 1:m
    for i = k+1 :m
        faktor=A(i,k)/A(k,k);
        for j =1:m
            A(i,j)=A(i,j)- (faktor*A(k,j));
        end 
        A
    end 
end 
disp(A);
det =1;
for i=1:m
    det=det*A(i,i);
end 
fprintf('determinan A=%f\n', det);