MATLAB: Increase value in vector

Question

X=[102 103 116 145 108] % 
iwant=[102 205 321 466 574] % what i need to get
% 102+103=205 ; 205+116=321 ;
for i=1:length(n)-1    % I tried to make such an option, but it does not work
    X1(i)=X(i)+X(i+1)
end

Help, how can I do this better?

Answer 1

X1=cumsum(X);