Create a simple student database program in C$++$ that allows adding, displaying, and deleting student records using pointers, structs, and functions. The program should be divided into multiple files for clear organization.

Requirements:

Struct Definition $($Student$.$h$)$:

Define a struct named Student in a header file $($Student$.$h$).$ The Student struct should contain at least the following fields:

int id $-$ for the student's ID$.$

char name$[100]-$ for the student's name.

float gpa $-$ for the student's GPA.

Database Functions $($Database$.$cpp and Database.h$)$:

Implement the following functions in Database.cpp and declare them in Database.h:

void addStudent$($Student$*$ &students, int &size, Student newStudent$)-$ Adds a new student to the array. This function should reallocate the students array to accommodate the new student.

void displayStudents$($const Student$*$ students, int size$)-$ Displays all students in the database.

void deleteStudent$($Student$*$ &students, int &size, int id$)-$ Deletes a student by ID$.$ This function should reallocate the students array to remove the student without leaving a gap.