I've definitely been bitten by this kind of bug before, but I did not come to this author's conclusion. What I learned is that each step of a calculation has lo

I've definitely been bitten by this kind of bug before, but I did not come to this author's conclusion. What I learned is that each step of a calculation has lower and upper bounds, regardless of int type. You always make sure your inputs, intermediates and products fall within these bounds. Consequently, the author's advice becomes irrelevant.