Add value at new position automatically to matrix

Hello there, following problem:

I have a matrix A. For an algorithm a value should be added in the last place of a new row and column, rest filled with 0. I tried this in B but the result should look like in C. Is there an easy way to do this without manually adding an additional column and row?

Thank you very much!

A = [1 2 3;4 5 6]

A = 2×3

1 2 3 4 5 6

B = {A 0;0 1}

B = 2×2 cell array
    {2×3 double}    {[0]}
    {[       0]}    {[1]}

C = [1 2 3 0;4 5 6 0;0 0 0 1]

C = 3×4

1 2 3 0 4 5 6 0 0 0 0 1

[Fabian Haslwanter]

This is my current solution:

A = [1 2 3;4 5 6];
value=1;
[m, n] = size(A);
B = zeros(m+1, n+1);
B(1:m, 1:n) = A;
B(m+1, n+1) = value;
B

B = 3×4

1 2 3 0 4 5 6 0 0 0 0 1

[Torsten]

Yes, it's fine.

Or

A = [1 2 3;4 5 6];
value = 1.0;
A = [A,zeros(size(A,1),1);zeros(1,size(A,2)),value]

A = 3×4

1 2 3 0 4 5 6 0 0 0 0 1

[Stephen23]

"This is my current solution:"

Just use BLKDIAG or basic MATLAB indexing:

A = [1,2,3;4,5,6];
A(end+1,end+1) = 1

A = 3×4

1 2 3 0 4 5 6 0 0 0 0 1

Answer 1

[Matt J]

A = [1 2 3;4 5 6];
C=[A,           zeros(2,1);
    zeros(1,3) ,    1    ]

C = 3×4

1 2 3 0 4 5 6 0 0 0 0 1

or

C=blkdiag(A,1)

C = 3×4

1 2 3 0 4 5 6 0 0 0 0 1