Adding certain 'parts' of two matrices

Hi guys,

I have two matrices:

A=[1 2;
   3 4]

and

B=[0 0 0 0;
   0 0 0 0;
   0 0 0 0;
   0 0 0 0]

now I want to add matrix A to the second and third rows and columns of matrix B, so it becoms:

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

How can I do that?

Thank you all guys.

Answer 1

[Stephen23]

B(2:3,2:3) = A