Consider the following code :
int i = 0; while (i

Question

Consider the following code :
int i = 0; while (i < 5) {
MessageBox.Show(i.ToString()); i++; }
Which of the following is correct?

BlackTom AI · Accepted Answer

To analyze what the loop does, I’ll step through how the code executes on each iteration.
First, the variable i is initialized to 0. The while condition checks i < 5 before each iteration, so the loop will run as long as i is less than 5. Inside the loop, the current value of i is shown via MessageBox.Show(i.ToString()), and then i is incremented by 1 (i++).
Option a says the loop will only run once. Since i starts at 0 and after the first iteration i becomes 1, the condition i < 5 is still true, so the loop continues. Therefore, it does not stop after a single pass.
Option b claims the loop will run indefinitely. That would require i never reaching 5. However, i is incremented each time through the loop, so after five iterations i will reach 5 and the condition i < 5 will be false, terminating the loop.
Option c states the loop will display numbers 1 to 5. The first value shown is i.ToString() with i equal to 0 on the first pass, so 0 is displayed first, not 1. Hence this option misstates the starting value and the end value.
Option d asserts the loop will display numbers 0 to 4. Given the initialization i = 0, the sequence of i values shown is 0, 1, 2, 3, 4, each on its own iteration, before i becomes 5 and the loop stops. This aligns with the loop’s guard (i < 5) and the increment (i++).
In summary, each candidate has been checked against the control flow: initialization, loop condition, body execution, and the increment step. Only the behavior described in option d matches how i progresses from 0 up to 4 and then stops when i reaches 5.

Introduction To Object Oriented Programming (082025-CMM)

Consider the following code : int i = 0; while (i < 5) { MessageBox.Show(i.ToString()); i++; } Which of the following is correct?

查看解析

登录即可查看完整答案

类似问题

What is the output of the following code? int i = 2; int j = 4; while (i < j) { i++; j--; } MessageBox.Show(i.ToString());

What is the output of the code snippet given below? s = "abcde" i = 1 while i < 5 : if i > 1 : print(s[i])

How many times does the following code fragment display "Hi"? i = 10 while i >= 0 : print("Hi") i = i - 1

How many times will the following loop run? i = 0 while i < 10 : print(i) i = i + 1

What will this small program output? a = 18 x = 2 while a > 4: a = a - 3 x = x + 1 print(x)

Which input value causes "Goodbye" to be output next? x = int(input()) while x >= 0: # Do something x = int(input()) print('Goodbye')

What's the value of total after running this code:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单