// a program that asks the user for a word // and a number, then prints out the word // that many times. It loops until the // user enters the SENTINEL value. var SENTINEL = "quit"; public static void main(String[] args) { while(true) } { } int word = readLine("Word? "); int count = readInt("How many times? "); for (int i = 0; i < count; --) { System.out.println(word); }

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
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What's the problem with the code ?

```java
// a program that asks the user for a word
// and a number, then prints out the word
// that many times. It loops until the
// user enters the SENTINEL value.
var SENTINEL = "quit";
public static void main(String[] args)
{
    while(true)
    {
        int word = readLine("Word? ");
        int count = readInt("How many times? ");
        for(int i = 0; i < count; --)
        {
            System.out.println(word);
        }
    }
}
```

### Explanation

This code snippet demonstrates a simple Java program designed to continuously prompt the user for a word and a number, allowing the word to be printed multiple times based on the number provided. 

- **SENTINEL**: A variable set to "quit", used to terminate the loop.
- **Loop Structure**: The `while(true)` loop makes the program run indefinitely until a break condition or sentinel value is encountered.
- **User Input**:
  - `readLine("Word? ")`: Prompts for a word.
  - `readInt("How many times? ")`: Prompts for a number indicating how many times the word should be printed.
- **Printing Mechanism**: A `for` loop is used to print the word the specified number of times.

Note: There are some issues in the code:
- The `int` data type is incorrectly used with `readLine()`. It should be a `String` for reading the word.
- The loop counter in the for loop is incorrectly decremented and does not affect the loop termination condition. It should be incremented inside the loop.
Transcribed Image Text:```java // a program that asks the user for a word // and a number, then prints out the word // that many times. It loops until the // user enters the SENTINEL value. var SENTINEL = "quit"; public static void main(String[] args) { while(true) { int word = readLine("Word? "); int count = readInt("How many times? "); for(int i = 0; i < count; --) { System.out.println(word); } } } ``` ### Explanation This code snippet demonstrates a simple Java program designed to continuously prompt the user for a word and a number, allowing the word to be printed multiple times based on the number provided. - **SENTINEL**: A variable set to "quit", used to terminate the loop. - **Loop Structure**: The `while(true)` loop makes the program run indefinitely until a break condition or sentinel value is encountered. - **User Input**: - `readLine("Word? ")`: Prompts for a word. - `readInt("How many times? ")`: Prompts for a number indicating how many times the word should be printed. - **Printing Mechanism**: A `for` loop is used to print the word the specified number of times. Note: There are some issues in the code: - The `int` data type is incorrectly used with `readLine()`. It should be a `String` for reading the word. - The loop counter in the for loop is incorrectly decremented and does not affect the loop termination condition. It should be incremented inside the loop.
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