combining matrices by replacing zeros

I have two matrices of the same length;

A = [1 ,0, 2, 0, 3, 0, 5]; B = [0, 2, 0, 3, 0, 5, 0];

I want to be 'combine' them into one matrix where the zeros 'disappear'; C = [1, 2, 2, 3, 3, 5, 5];

May I know how to do this?

Answer 1

[Jan]

A = [1 ,0, 2, 0, 3, 0, 5];
B = [0, 2, 0, 3, 0, 5, 0];
C = A + B

Or if the zeros need not be at the same indices as the non-zeros in the other variable:

C = A;
C(A == 0) = B(B ~= 0)