MATLAB: Change the certain element after comparison of two arrays

Question

there is a string of 8 numbers, and a string filled with zeros (of the same length). I need to check the first string for the presence of zeros in it, and if there is a zero there, then it is necessary that in the second string the same element is changed to 1.

For example

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

A = [1 2 3 4 5 6 7 0]

then check A for the presence of zeros and change B to the B = [0 0 0 0 0 0 0 1]

Perhaps this is a stupid question, but I have not yet found an answer, please help.

Answer 1

B = A == 0;