i want to write a program that determine a student’s grade. It reads three test scores (between 0-100) and calls a function the calculate and return a student’s grade based on following rules:
(a) If the average score is 90% and more, the grade is ‘A’
(b) If the average scores 70% or more & less than 90%, it checks the third score. If the third score is more than 90%, the grades is ‘A’ otherwise than grade is ‘B’
(c) If the average score is 50%, it checks the average of second & third scores. If the average of them is greater than 70%, the grade is ‘C’, otherwise it is ‘D’.
(d) If the average score is less than 50%, then the grade is ‘F’
The program’s main() contains only call statements. At least 3 subfunctions are required:
1. One function to read score
2. One to determine the grade
3. One to print the result
if anybody know please reply because i'm a new about this programming.