If x is an int where x = 1, what will x be after the following loop terminates?
while (x < 100)
x *= 2;
a) 2
b) 64
c) 100
d) 128
e) None of the above, this is an infinite loop
Answer: d. Explanation: With x = 1, the loop condition is true and the statement executes, doubling x, which is now 2. Since the loop condition is still true, the statement executes again, doubling x to 4. The condition remains true for the next 4 iterations, where x becomes 8, 16, 32 and 64. Since (x < 100) is still true when x = 64, the loop iterates again and x becomes 2 * 64 = 128. Now, (x < 100) is no longer true and the loop terminates with x = 128.