### Code Explanation for Educational PurposesThis 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 Breakdown1. **Header Files and Namespace** ```cpp #include #include using namespace std; ``` - `#include `: Includes the input/output stream standard library. - `#include `: 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

Step 1: Declare a string alpha that contains the alphabets from 'a' to 'z' as a string. Step 2: Declare and initialize the variable SIZE to 26. Step 3: Declare a character array letters. Step 4: Iterate a loop from i=0 to SIZE. Use at() function to retrieve the character stored at index passed as parameter and assign it to letters. Step 5: Invoke the to_string() function to display content of array letters in the specified format.#include <iostream>#include <string> using namespace std; string to_string(string array[],int size);int main() { const string alpha="abcdefghijklmnopqrstuvwxyz"; const int SIZE=26; string letters[SIZE]; for(int i=0;i<SIZE;i++) { letters[i] = alpha.at(i); } cout<<to_string(letters,SIZE)<<endl;}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;}Thus, the blanks must be filled with the following statements for(int i=0;i<SIZE;i++) { letters[i] = alpha.at(i); }