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Write a C++ program that keeps track of an array of Person objects and handles basic commands.

The Person object contains the following fields:

• FirstName { string }
• LastName { string }

INSERT - inserts a Person into the array based on user input, sorts the array by last name, and prints out all of the entries in the array. (Format: INSERT - LastName, FirstName)

• If a given Person already exists in the array, then the program will return an error message to the user.
• If the user input does not follow the LastName, FirstName format, then the program will return an error message to the user.

Example:

Input - INSERT - Smith, John

Output

Doe, Jane

Smith, John

VIEW - prints out the current array. (Format: VIEW)

Example:

Input - VIEW                               

Output

Doe, Jane

Smith, John

DELETE - deletes a person from the array based on user input, sorts the array, and prints out all of the entries in the new array. (Format: DELETE - LastName, FirstName)

• If the Person to be deleted from the array does not exist in the array, then the program will return an error message to the user.
• If the user input does not follow the LastName, FirstName format, then the program will return an error message to the user.

Example:

Input - DELETE - Smith, John    

Output

Doe, Jane

Utilize functions, loops, and pointers where applicable, and remember to include error handling to let the user know if something went wrong during your program.