Debugging session

作者 Doug Hull, February 3, 2009

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clear
num = [1 1 1 1 1 1 1];
den = [1 2 3 0 5 6 7];
for i = 1: numel(den)
    if den(i) == 0
        a = 1
    else
        a(i) = num(i)/den(i)
    end
end
plot(a,'o-')

The above code does not behave as expected. The values in the middle of the vector are zeroed out. This debugging session figures out why this happens.