Define a class named StudentGrader that has the following attributes defined within the initialization function: homeworkAvg as float midtermScore as integer • finalScore as integer attendance as float a. Define a function named getOverallPctScore(). This function calculates and returns the overall grade score using the following weights for each category: Homework -35% Midterm - 25% Final - 30% Attendance -10% b. Define a function named getGradeLetter (). This function calculates and returns the letter grade based on the overall grade score. Hint - Use the function defined in b to get the score for this. Assume following brackets are used for the grade letter: Grade Formula Grade A B C D F Total Score Cutoff 90-100 80-89 70-79 60-69 0-59

Exercise 4: Define a class BOOK with the following specifications: Private members of the class BOOK are BOOK NO integer type BOOKTITLE 20 characters float (price per copy) A function to calculate the total cost for N number of copies where N PRICE TOTAL_COST() is passed to the function as argument. Public members of the class BOOK are INPUT() function to read BOOK_NO. BOOKTITLE, PRICE PURCHASE() function to ask the user to input the number of copies to be purchased. It invokes TOTAL_COST() and prints the total cost to be paid by the user. Note: You are also required to give detailed function definitions.

ll data members must be declared as private. Global variables are not allowed. Constants are ok. There should be no usage of cin or cout in the method or in the class definition or required functions. They should be handled using parameters and return values. cin and cout can and should be used in the testing functions. There should be only one “return” statement in a function or method. Multiple return statements within the same function/method are not allowed. Please pay attention to the required data types in the description. tuple, list and vector classes are not allowed to be used in this exam. Please write C++ functions, class and methods to answer the following questions. 1. Define a new C++ class named “Exam” that manages simple exam information: student id (integer) and a score (integer) The class must provide at least the following two methods: • isPassing which will return a boolean: true if the score is >=60 and false otherwise • toString method that returns the string…