Elimination of rows in array

Hello. Didn't find a relevant answer.

Suppose we have an array of such form:

A=[a1 b1 c1 d1; a2 b2 c2 d2; etc], i.e. rows of sets of parameters. How to delete from the array the rows with the following conditions:

if 1)a1+b1<c1 then delete that row
    and 2) if a1+b1>d1 then delete that row
end

Thank you!

Answer 1

[Thorsten]

 A(A(:,1)+A(:,2) < A(:,3) | A(:,1)+A(:,2) > A(:,4), :) = [];

[Vadim Tambovtsev]

Finally, they got deleted, thank you