... variables could actually be optimized for speed, so n and nums were not specified as register because they are not accessed as often as i and sum within the loop. However, in environments in which ... operator because it requires three operands. It takes the general form Exp1 ? Exp2 : Exp3; where Exp1, Exp2, and Exp3 are expressions. Notice the use and placement of the colon. The value ... Here, if j is non-zero, then i is divided by j, and the outcome is assigned to result. Otherwise, the div_zero( ) error handler is called, and zero is assigned to result. CRITICAL SKILL 7.10:...