Critical Thinking Questions Case 2 Robin thinks that she has a good handle on the use of compound operators but she wants to do a couple of sample problems just to make certain. In both of the problems below, Robin assumes that intResult = 24. When Robin correctly calculates intResult -= 3, what value does she get?
A) 18
B) 72
C) 21
D) None of the above

Question

Quizplus · Accepted Answer

The compound operator '-=' means subtract the right-hand operand from the left-hand operand and store the result in the left-hand operand.

Thus, intResult -= 3 is equivalent to intResult = intResult - 3.

Given intResult = 24, Robin correctly calculates intResult - = 3 as:

intResult = intResult - 3 = 24 - 3 = 21.

Therefore, the best answer choice is C, 21.

Critical Thinking Questions Case 2 Robin Thinks That She Has