Question

Errors can be syntax errors or logic errors (the code works, but not as intended). The loop must iterate 3 times to generate a lottery number. Which of the following loops contains an error?

I. for(int n = 1; n <= lotNumLength; n++)
II. for(int n = 0; n <= lotNumLength; n++)
III. for(int n = 0; n < lotNumLength; n++)

A) I only
B) II only
C) III only
D) I and II only
E) I and III only

Answer 1

The correct answer to which loops contain an error for iterating exactly 3 times is D) I and II only, where loop I starts at 1 instead of 0, and loop II goes one iteration too far.

Step-by-step explanation:

To identify which loop contains an error in your question, we need to understand that the loop should iterate exactly 3 times to generate a lottery number. If lotNumLength is indeed the length of the lottery number and it equals 3, then:

• Loop I: for(int n = 1; n <= lotNumLength; n++) will iterate 3 times, but starts at 1, not 0 which is typical for index-based operations.
• Loop II: for(int n = 0; n <= lotNumLength; n++) will iterate 4 times because it includes 0 and then goes up to and including lotNumLength.
• Loop III: for(int n = 0; n < lotNumLength; n++) is the correct way to iterate a loop 3 times starting from index 0 and stopping before reaching lotNumLength.

Therefore, the loops that contain an error are I and II. The correct answer is D) I and II only.