MATLAB: Elseif using specific sets

elseif different sets

Hello, I need to evaluate a function for specific sets, ideally don't want to evalute the function for all sets so once it is above the condition to stop. I try to use the "elseif" statement but it never actually enters the elseif and terminates, even though it should enter.
Example
xa=[1 2] ; xb=[0 1] ; xc=[-1 4]; xd=[4 7]; xe=[10 10]; xf=[0 0];
y=xa(1)+xa(2)
    if y<10
        y=xb(1)+xb(2)
    elseif y<10
        y=xc(1)+xc(2)
    elseif y<10
        y=xd(1)+xd(2)
    elseif y<10
        y=xe(1)+xe(2)
    else 
        y=xf(1)+xf(2)
    end
Above, in the "xa" case, y=3 so it enters the if statament, evaluates the "xb" case and gets y=1 so it should enter the elseif of case "xc", but it terminates.
In this example, I need the final y to be the case xd so y=11. This is the first instance the criterion is not satisfied.
Do you know what I'm doing wrong and how to fix it? Thanks

Best Answer

I'll use "while" instead, thanks though
X=[1 2; 0 1; -1 4; 4 7; 10 10; 0 0]
ii=1
y=1e-10
while y<10
y=X(ii,1)+X(ii,2)
ii=ii+1
end
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