You will be solving this problem using C++ and your own defined functions. Define at least 3 functions besides the main() function.

Write the program that calculates and prints a student's letter grade and a message based on the average of three test grades. Sample run: Enter the first test grade: 90 Enter the second test grade: 80 Enter the third test grade: 75 Your average is: 81.66 which is a B. You can take the next course. main() Should only read the three test grades.

Then call your functions to perform the other tasks: calculating the average, determining the letter grade and printing a message, which states the letter grade and if the student can enroll in the next course. The student can enroll in the next course, if the letter grade is 'A', 'B' or 'C' The grading scale for the letters can be found on our course syllabus.

Function Documentation: Each function MUST have its own flowerbox.

The flowerbox must include all of the following: function name, purpose, what each parameter represents and what the return value represents.