MATLAB: Adding matrix elements (entering matrices into other matrix)

Question

my code:

A= zeros(3,3)

B = ones(2,2)

C = ones(2,2)

A(1:2,1:2) = B

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

right now it gives: A=

1 1 0

1 1 1

0 1 1

I want the 2,2 position to add instead of simply replace. I want the final output to be:

A=

1 1 0

1 2 1

0 1 1

thanks

Answer 1

How about:

A(2:3,2:3) = A(2:3,2:3) + C