Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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![### Code Explanation for Educational Purposes
This C++ code snippet is designed to fill an array of strings with the letters of the alphabet from "a" to "z". Additionally, it includes a function to convert this array into a single string with each element delimited by commas and enclosed in square brackets.
#### Code Breakdown
1. **Header Files and Namespace**
```cpp
#include <iostream>
#include <string>
using namespace std;
```
- `#include <iostream>`: Includes the input/output stream standard library.
- `#include <string>`: Includes the string library for handling string operations.
- `using namespace std;`: Allows direct access to the standard namespace.
2. **Function Declaration**
```cpp
string to_string(string array[], int size);
```
- Declares the `to_string` function which converts the array to a formatted string.
3. **Main Function**
```cpp
int main()
{
const string alpha = "abcdefghijklmnopqrstuvwxyz";
const int SIZE = 26;
string letters[SIZE];
for (...) {
letters[...] = ...;
}
cout << to_string(letters, SIZE) << endl;
}
```
- Creates a constant string `alpha` representing the entire alphabet.
- Defines an integer `SIZE` with the value 26, the length of the alphabet.
- Initializes an array `letters` with 26 elements to store the alphabet.
- The for loop is intended to iterate over each letter of `alpha` and assign it to the `letters` array. The loop's body must be completed for functionality.
- Outputs the formatted string array using `cout`.
4. **String Conversion Function**
```cpp
string to_string(string a[], int size)
{
string result = "[";
if (size > 0)
{
result = result + "\"" + a[0] + "\"";
for (int i = 1; i < size; i++)
{
result = result + ", \"" + a[i] + "\"";
}
}
result = result + "]";
return result;
}
```
- Defines a function `to_string` that takes a string array and its size as parameters.
- Initializes `result` as `[` to prepare the opening bracket for the list.
- Checks if the array](https://content.bartleby.com/qna-images/question/c8525d30-f731-4576-a11c-639afeb912cb/61584cdc-887b-498e-9193-3e41f46bac77/tsdedil_processed.jpeg)
Transcribed Image Text:### Code Explanation for Educational Purposes
This C++ code snippet is designed to fill an array of strings with the letters of the alphabet from "a" to "z". Additionally, it includes a function to convert this array into a single string with each element delimited by commas and enclosed in square brackets.
#### Code Breakdown
1. **Header Files and Namespace**
```cpp
#include <iostream>
#include <string>
using namespace std;
```
- `#include <iostream>`: Includes the input/output stream standard library.
- `#include <string>`: Includes the string library for handling string operations.
- `using namespace std;`: Allows direct access to the standard namespace.
2. **Function Declaration**
```cpp
string to_string(string array[], int size);
```
- Declares the `to_string` function which converts the array to a formatted string.
3. **Main Function**
```cpp
int main()
{
const string alpha = "abcdefghijklmnopqrstuvwxyz";
const int SIZE = 26;
string letters[SIZE];
for (...) {
letters[...] = ...;
}
cout << to_string(letters, SIZE) << endl;
}
```
- Creates a constant string `alpha` representing the entire alphabet.
- Defines an integer `SIZE` with the value 26, the length of the alphabet.
- Initializes an array `letters` with 26 elements to store the alphabet.
- The for loop is intended to iterate over each letter of `alpha` and assign it to the `letters` array. The loop's body must be completed for functionality.
- Outputs the formatted string array using `cout`.
4. **String Conversion Function**
```cpp
string to_string(string a[], int size)
{
string result = "[";
if (size > 0)
{
result = result + "\"" + a[0] + "\"";
for (int i = 1; i < size; i++)
{
result = result + ", \"" + a[i] + "\"";
}
}
result = result + "]";
return result;
}
```
- Defines a function `to_string` that takes a string array and its size as parameters.
- Initializes `result` as `[` to prepare the opening bracket for the list.
- Checks if the array
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