public static int addGrade(int[] allGrades, int grade, int listSize) { allGrades[listSize] = grade; ++listSize; return listSize; } public static void main(String[] args) { final int MAX_GRADES = 100; int[] courseGrades = new int[MAX_GRADES]; int numGrades = 0; } numGrades = addGrade(csGrades, 74, numGrades); numGrades = addGrade(csGrades, 74, numGrades); numGrades = addGrade (csGrades, 74, numGrades);

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

What is the length of array csGrades at the end of main()?

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3
74
99
100
```java
public static int addGrade(int[] allGrades, int grade, int listSize) {
    allGrades[listSize] = grade;
    ++listSize;
    return listSize;
}

public static void main(String[] args) {
    final int MAX_GRADES = 100;
    int[] courseGrades = new int[MAX_GRADES];
    int numGrades = 0;
    numGrades = addGrade(csGrades, 74, numGrades);
    numGrades = addGrade(csGrades, 74, numGrades);
    numGrades = addGrade(csGrades, 74, numGrades);
}
```

### Explanation

This Java program demonstrates a simple method for adding grades to an array:

- **addGrade Method:** 
  - It accepts an integer array `allGrades`, an integer `grade`, and an integer `listSize`.
  - The method assigns the given `grade` to the `allGrades` array at the index specified by `listSize`.
  - It then increments `listSize` to reflect the new number of grades.
  - Finally, it returns the updated `listSize`.

- **main Method:**
  - Defines a constant `MAX_GRADES` set to 100, indicating the maximum number of grades that can be stored.
  - Creates an integer array `courseGrades` with a size of `MAX_GRADES`.
  - Initializes `numGrades`, a counter for the number of grades, to 0.
  - Calls `addGrade` three times, each time adding a grade of 74 to `courseGrades`.
  - Updates `numGrades` with the new total number of grades after each addition.

### Usage

This program can be used as a foundation for managing student grades in a course, allowing you to add grades up to a predefined maximum limit.
Transcribed Image Text:```java public static int addGrade(int[] allGrades, int grade, int listSize) { allGrades[listSize] = grade; ++listSize; return listSize; } public static void main(String[] args) { final int MAX_GRADES = 100; int[] courseGrades = new int[MAX_GRADES]; int numGrades = 0; numGrades = addGrade(csGrades, 74, numGrades); numGrades = addGrade(csGrades, 74, numGrades); numGrades = addGrade(csGrades, 74, numGrades); } ``` ### Explanation This Java program demonstrates a simple method for adding grades to an array: - **addGrade Method:** - It accepts an integer array `allGrades`, an integer `grade`, and an integer `listSize`. - The method assigns the given `grade` to the `allGrades` array at the index specified by `listSize`. - It then increments `listSize` to reflect the new number of grades. - Finally, it returns the updated `listSize`. - **main Method:** - Defines a constant `MAX_GRADES` set to 100, indicating the maximum number of grades that can be stored. - Creates an integer array `courseGrades` with a size of `MAX_GRADES`. - Initializes `numGrades`, a counter for the number of grades, to 0. - Calls `addGrade` three times, each time adding a grade of 74 to `courseGrades`. - Updates `numGrades` with the new total number of grades after each addition. ### Usage This program can be used as a foundation for managing student grades in a course, allowing you to add grades up to a predefined maximum limit.
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