Display a new matrix

Hi there, if I have a matrix A of MxM and another matrix B column of Mx1. And a variable p.

When I say p = 1, I want to display a matrix C formed from the first line of the matrix A, to which I also add the first line from B.

Ex:

A = [ 1 2 3 4; 
        5 6 7 8;
       9 10 11 12;
       13 14 15 16 ]
B = [  0; 
         1;
         1;
         0 ] 
p = 1 --> C = [1 2 3 4 0]
p = 2 --> C = [1 2 3 4 0; 5 6 7 8 1]
p = 3 --> C = [1 2 3 4 0; 5 6 7 8 1; 9 10 11 12 1]

A little help, please

Answer 1

[per isakson]

This should do it:

>> p=1;
>> [A(1:p,:),B(1:p,:)]
ans =
     1     2     3     4     0
>> p=2;
>> [A(1:p,:),B(1:p,:)]
ans =
     1     2     3     4     0
     5     6     7     8     1
>>