a. A function to read the students’ data into the array.
b. A function to assign the relevant grade to each student.
c. A function to find the highest test score.
d. A function to print the names of the students having the highest test
score.
Your program must output each student’s name in this form: last name
followed by a comma, followed by a space, followed by the first name; the
name must be left justified. Moreover, other than declaring the variables and
opening the input and output files, the function main should only be a
collection of function calls.