Yes, they are expensive, but think of the expense in time and possibly money when the power goes out (and you computer turns off) in the middle of some important work! It not only provides time to save work and shut down properly, but can also protect hardware - though a surge protector is better for spikes and brown outs.

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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