Write down the program which will enable a teacher to calculate the percentage and the final grade for the students in a class. The program will allow the teacher to enter the student’s first and last name and the number of points the student received. The program shall only accept scores between 0 and 1,000 points (including 0 and 1,000), with the 1,000 points being maximum number of points. If input value is within the valid range, program will show a "good score" message; otherwise, the program will display an error message and then terminate program. The program shall then determine the score percentage, and then calculate the grade based upon the percentage.