Looping through numbers in file and adding first two numbers then next two and so on

A = [1 2 3 4 5]

1+2 = 3

2+3 = 5

3+4 = 7

4+5 = 9

How can I loop through an array of numbers like above while storing the number everytime numbers are added? Thank you for any help!

[Baha411]

you can do sth like this:

B = [A 0]+[0 A];
B([1 end]) = [];
B
B =
     3     5     7     9

Answer 1

[the cyclist]

A(1:end-1) + A(2:end)

Answer 2

[Andrei Bobrov]

conv(A,[1,1],'valid')

or

b = movsum(A,2);
out = b(2:end);