int x = 0; while (x != 0) { cout << "hello world"; x = x + 1; } // How many times does this code execute the line cout << "hello world"; 1 3
int x = 0; while (x != 0) { cout << "hello world"; x = x + 1; } // How many times does this code execute the line cout << "hello world"; 1 3
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 9**
```cpp
int x = 0;
while ( x != 0 )
{
cout << "hello world";
x = x + 1;
}
```
// How many times does this code execute the line `cout << "hello world";`
- ○ 0
- ○ 1
- ○ 2
- ○ 3
**Explanation:**
In this code snippet, a variable `x` is initialized to 0. The `while` loop checks the condition `(x != 0)`. Since `x` is 0 at the start, the condition is false, and the loop's body is never executed. Therefore, the line `cout << "hello world";` is not executed at all. The correct answer is:
- ○ 0
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