HOW TO PUT ONE MATRIX UNDER ANOTHER AND MAKE IT A SINGLE MATRIX

I HAVE MATRIX A AND B AND I HAVE TO CREATE C USING A AND B. WHAT COMMAND DO I NEED. ALSO I HAVE N NO. OF MATRIX THAT I NEED TO STICH LIKE THIS WAY.

A = [1 2 3;4 5 6;7 8 9]

B = [1 2 2;2 2 2;1 1 1]

C = [1 2 3;4 5 6;7 8 9;1 2 2;4 5 6;7 8 9]

Answer 1

[DGM]

A = [1 2 3;4 5 6;7 8 9]

A = 3×3

1 2 3 4 5 6 7 8 9

B = [1 2 2;2 2 2;1 1 1]

B = 3×3

1 2 2 2 2 2 1 1 1

% concatenate
C = [A; B]

C = 6×3

1 2 3 4 5 6 7 8 9 1 2 2 2 2 2 1 1 1

% or 
C = cat(1,A,B)

C = 6×3

1 2 3 4 5 6 7 8 9 1 2 2 2 2 2 1 1 1