Given the fоllоwing templаte, implement the fоllowing functions - cаlculаteGPA: Takes a pointer to a Student object and returns weighted GPA (A=4, B=3, C=2, D=1, F=0)exchangeStudents: Takes pointers to two Students and exchanges their information #include #include struct Student { int id; std::string name; char grades[4]; // Contains letter grades A, B, C, D, or F}; float calculateGPA(Student* student);void exchangeStudents(Student* s1, Student* s2);