for (int i = 0; i < 3; i++) for (int j = 0; j < beta[ i ] [j]

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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Certainly! Here is the transcription of the image for use on an educational website:

---

### Exercise 6: Understanding Nested Loops and Array Indexing in C++

Consider the following declaration:

```cpp
int [ ][ ] beta = new int [3][3];
```

**Question:**
What is stored in `beta` after the following code executes? Keep track of the variables' values in a table. BOX IN YOUR OUTPUT RESULT.

```cpp
for (int i = 0; i < 3; i++) {
    for (int j = 0; j < 3; j++) {
        beta[i][j] = 2 * (1 + j) % 4;
    }
}
```

**Explanation:**
- You are asked to analyze the nested loops and how the array `beta` is modified in each iteration.
- The outer loop iterates over the rows (`i`), and the inner loop iterates over the columns (`j`).
- For each combination of `i` and `j`, the value at `beta[i][j]` is calculated as `2 * (1 + j) % 4`.

**Task:**
1. Create a table to track the values of `beta` for each iteration.
2. Calculate the values according to the given formula.
3. Write the final values of the array in a boxed format for clarity.

---

This exercise helps students practice their understanding of nested loop operations, array manipulation, and modular arithmetic in C++.
Transcribed Image Text:Certainly! Here is the transcription of the image for use on an educational website: --- ### Exercise 6: Understanding Nested Loops and Array Indexing in C++ Consider the following declaration: ```cpp int [ ][ ] beta = new int [3][3]; ``` **Question:** What is stored in `beta` after the following code executes? Keep track of the variables' values in a table. BOX IN YOUR OUTPUT RESULT. ```cpp for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) { beta[i][j] = 2 * (1 + j) % 4; } } ``` **Explanation:** - You are asked to analyze the nested loops and how the array `beta` is modified in each iteration. - The outer loop iterates over the rows (`i`), and the inner loop iterates over the columns (`j`). - For each combination of `i` and `j`, the value at `beta[i][j]` is calculated as `2 * (1 + j) % 4`. **Task:** 1. Create a table to track the values of `beta` for each iteration. 2. Calculate the values according to the given formula. 3. Write the final values of the array in a boxed format for clarity. --- This exercise helps students practice their understanding of nested loop operations, array manipulation, and modular arithmetic in C++.
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