// this program counts down to 0 from // the number the user enters public static void main(String[] args) { } Code } int num = readInt("Enter number: "); for (int i = num; i >= 0; i++) System.out.println(i); } // this program prints "hello" as many // times as the user enters public static void main(String[] args) { var num = read Int("Enter number: "); for (int i = 0; int i < num; num++) { System.out.println("hello"); }

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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what's the problem ?

```
// This program counts down to 0 from 
// the number the user enters
public static void main(String[] args) {
    int num = readInt("Enter number: ");
    for(int i = num; i >= 0; i--) 
        System.out.println(i);
}

// This program prints "hello" as many 
// times as the user enters
public static void main(String[] args) {
    var num = readInt("Enter number: ");
    for(int i = 0; i < num; i++) {
        System.out.println("hello");
    }
}
```

### Explanation

#### First Program:
- **Functionality**: This code snippet is designed to count down from a user-provided number to 0.
- **Variable**: `num` stores the user input.
- **Loop**: A `for` loop iterates, starting from `num` and decrements until it reaches 0, printing each number.

#### Second Program:
- **Functionality**: This snippet prints the word "hello" a number of times as specified by the user.
- **Variable**: `num` stores the user input.
- **Loop**: A `for` loop runs from 0 to one less than `num`, printing "hello" during each iteration.
Transcribed Image Text:``` // This program counts down to 0 from // the number the user enters public static void main(String[] args) { int num = readInt("Enter number: "); for(int i = num; i >= 0; i--) System.out.println(i); } // This program prints "hello" as many // times as the user enters public static void main(String[] args) { var num = readInt("Enter number: "); for(int i = 0; i < num; i++) { System.out.println("hello"); } } ``` ### Explanation #### First Program: - **Functionality**: This code snippet is designed to count down from a user-provided number to 0. - **Variable**: `num` stores the user input. - **Loop**: A `for` loop iterates, starting from `num` and decrements until it reaches 0, printing each number. #### Second Program: - **Functionality**: This snippet prints the word "hello" a number of times as specified by the user. - **Variable**: `num` stores the user input. - **Loop**: A `for` loop runs from 0 to one less than `num`, printing "hello" during each iteration.
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