How do i build a matrix asking the user for inputs?

this is script thus far. I asked the user for the number of lines and columns but when the matrix is 3 by 3 the asnwer given by the script is a matrix with 4 columns and 2 lines. HELP

num.linhas=input('Number of lines in the matrix: ');

num.colunas=input('Number of colums in the matrix: ');

for i=1:num.linhas

M(i)=input('Number: ');

end

for j=1:num.colunas

N(j)=input('Number: ');

end

A=[M;N];

A

idx=A==0;

contador=sum(idx(:));

size(A);

sz=size(A);

N=(num.linhas.*num.colunas);

percentagem=(contador./N)*100;

fprintf('\n A matriz A apresenta %f zeros',contador)

fprintf('\n A matriz tem uma dimensão de %f linhas e %f colunas',sz)

fprintf('\n A matriz A apresenta uma percentagem de %0.1f zeros',percentagem)

Answer 1

[David Hill]

If allowed, I would build the entire matrix with one input.

yourMatrix=input('Input your matrix in the given format, for example [1,2,3;4,5,6]: ');