Suppose sum, num, and j are int variables, and the input is 4 7 12 9 -1.What is the output of the following code?
A) 24
B) 25
C) 41
D) 42

Question

Suppose sum, num, and j are int variables, and the input is 4 7 12 9 -1.What is the output of the following code? 
A) 24 
B) 25 
C) 41 
D) 42

Quizplus · Accepted Answer

The code assigns the first input to sum and the second input to num, then enters a while loop. Inside the loop, it calculates the sum of sum and num, assigns the value of sum to num, and reads in the next input to j. The loop continues until j is -1. So, in this case, the loop will run 3 times:
First iteration: sum = 4, num = 7, j = 12 -> sum = 11, num = 12
Second iteration: sum = 11, num = 12, j = 9 -> sum = 23, num = 9
Third iteration: sum = 23, num = 9, j = -1 -> loop ends
Therefore, the final value of sum is 23+9=32, but since the question asks for the value of sum after the second input, the answer is 4+7=11.

Suppose Sum, Num, and J Are Int Variables, and the Input