A text file students.txt contains student records (name, date of birth, and GPA). Write a program that reads student records from students.txt and creates an array of student structures S[ ] defined as follows:

struct Date

{ int month;

int day;

int year;

} ;

struct Student

{ string name;

Date dob;

double GPA;

} S[200];

Process all records from the array S and compute the mean value, the standard

deviation, and the coefficient of variation for student age, and for student GPA.