1. Write a program that does the following: - reads an unspecified number of integers - determines how many positive and negative values have been read - computes the total and average of the input values (not counting zeros). Your program ends with the input 0. Display the average as a floating-point number. If the entire input is 0, the program displays "No numbers are entered except 0". Here is a sample run: Enter integers ending with 0: 1 2 1 3 0 The number of positives is 3 The number of negatives is 1 The total is 5 The average is 1.25

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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**Programming Exercises:**

1. **Develop a Program:**
   - **Purpose:** Create a software program that:
     - Accepts an unspecified number of integer inputs.
     - Counts the positive and negative integers provided by the user.
     - Calculates and outputs the total and average of the integers entered (excluding zeros).
   - The program should terminate when the input is `0`.
   - Display the average as a floating-point number.
   - If the user enters only `0`, display the message: “No numbers are entered except 0”.

   **Example Execution:**
   ```
   Enter integers ending with 0: 1 2 -1 3 0
   The number of positives is 3
   The number of negatives is 1
   The total is 5
   The average is 1.25
   ```

2. **Pentagonal Number Calculation:**
   - **Definition:** A pentagonal number is given by the formula \(n(3n-1)/2\) where \(n = 1, 2, \ldots\).
     - The initial pentagonal numbers are 1, 5, 12, 22, ...
   - **Task:** Develop a method with the header:
     ```java
     public static int getPentagonalNumber(int n)
     ```
   - **Examples:**
     - `getPentagonalNumber(1)` returns `1`
     - `getPentagonalNumber(2)` returns `5`
   - **Objective:** Write a test program that outputs the first 100 pentagonal numbers, displaying 10 numbers per line. Numbers should be separated by one space.
Transcribed Image Text:**Programming Exercises:** 1. **Develop a Program:** - **Purpose:** Create a software program that: - Accepts an unspecified number of integer inputs. - Counts the positive and negative integers provided by the user. - Calculates and outputs the total and average of the integers entered (excluding zeros). - The program should terminate when the input is `0`. - Display the average as a floating-point number. - If the user enters only `0`, display the message: “No numbers are entered except 0”. **Example Execution:** ``` Enter integers ending with 0: 1 2 -1 3 0 The number of positives is 3 The number of negatives is 1 The total is 5 The average is 1.25 ``` 2. **Pentagonal Number Calculation:** - **Definition:** A pentagonal number is given by the formula \(n(3n-1)/2\) where \(n = 1, 2, \ldots\). - The initial pentagonal numbers are 1, 5, 12, 22, ... - **Task:** Develop a method with the header: ```java public static int getPentagonalNumber(int n) ``` - **Examples:** - `getPentagonalNumber(1)` returns `1` - `getPentagonalNumber(2)` returns `5` - **Objective:** Write a test program that outputs the first 100 pentagonal numbers, displaying 10 numbers per line. Numbers should be separated by one space.
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