Adding elements to a 2D array

Suppose matrix A=[ 1,2 ; 3,4 ; 5,6]

Matrix B=[ 7 , 8 ]

whever I use C=[A,B] I receive this error message

Error using ==> horzcat

CAT arguments dimensions are not consistent.

Answer 1

[the cyclist]

C = [A; B]

[Shady Elsayed]

Oops forgot about that, now it worked! Thanks very much