Exercise 1. Write a C++ program with function qualityPoints that inputs a student's average and returns 4 if a student's average is 90100,3 if the average is 8089,2 if the average is 7079,1 if the average is 60-69, and 0 if the average is lower than 60 . 2. Write a complete C++ program that has three functions named as follows: - int square (int) : calculate an area of square (length*length). - double triangle(double, double) : calculate an area of triangle (0.5 height*base). - double circle (double) : calculate an area of circle (3.14159 (radius * radius)). Your program will continuously run until the user selects ' n '. The following is a sample run: Calculate an area of: 1. Square 2. Triangle 3. Circle Please give your choice [1/2/3]: 2 Enter height and base : 5 10 The area of the triangle is 25.0 Continue [y]: y Calculate an area of: 1. Square 2. Triangle 3. Circle Please give your choice [1/2/3]: 1 Enter side length: 10 The area of the square is 100.0 Continue [y]: n Thank you! Hint: Use do while loop and switch statement