Question 5 int x = 10; int y = 0; while (x >= 5 && x <= 20) { cout << "hello world"; x = x + 6; } // How many times does this code execute the line cout << "hello world" 02 O O 5 3 t
Question 5 int x = 10; int y = 0; while (x >= 5 && x <= 20) { cout << "hello world"; x = x + 6; } // How many times does this code execute the line cout << "hello world" 02 O O 5 3 t
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Transcribed Image Text:### Question 5
```cpp
int x = 10;
int y = 0;
while (x >= 5 && x <= 20) {
cout << "hello world ";
x = x + 6;
}
```
**Explanation:**
This code snippet involves a `while` loop where the variable `x` is initialized to 10. The loop condition checks if `x` is between 5 and 20 inclusive. Inside the loop, the statement `cout << "hello world ";` is executed, and `x` is incremented by 6 in each iteration.
**Question:**
How many times does the code execute the line `cout << "hello world "`?
- ○ 2
- ○ 5
- ○ 3
- ○ 4
**Analysis:**
1. Initially, `x = 10`. The condition `10 >= 5 && 10 <= 20` is true, so "hello world" is printed, and `x` becomes 16.
2. Now, `x = 16`. The condition `16 >= 5 && 16 <= 20` is true, so "hello world" is printed again, and `x` becomes 22.
3. Now, `x = 22`. The condition `22 >= 5 && 22 <= 20` is false, so the loop terminates.
Thus, the line `cout << "hello world "` is executed **2 times**.
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