Answered: Fill an array of strings with the twenty-six strings "a" ... "z".

Database System Concepts

7th Edition

ISBN: 9780078022159

Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher: McGraw-Hill Education

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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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