In c# You have been asked to design a program that will allow a teacher to calculate the percentage and the final grade for students in a class. The program will prompt the teacher to enter the students first and last name and the number of points the student received. The program will only accept scores between 0 and 1,000 points (including 0 and 1,000), with 1,000 points being the maximum number of points. If the input value within the valid range, the program will display a good score message; otherwise, the program will display an error message and then terminate the program. The program will then calculate the score percentage and then determine the grade based on the percentage using the following grade criteria.

Score Percent Range	Grade
90100	A
8089	B
7079	C
6069	D
059	F

The program will then display the students first name, last name, number of points, calculated percentage, and final grade.

The program will have an initial prompt informing the user of the programs purpose, along with a program termination message