Design a C program to manage student grades for a class of $30$ students using arrays. The program should allow users to input each student's

name and their corresponding grade, storing this information in parallel arrays. Implement functionalities to display all students with their grades,

calculate and show the average grade, identify and print the names of students with the highest and lowest grades, and sort the students by their

grades in ascending order for display. Ensure that the program handles input validation to prevent exceeding the maximum of $30$ students and

properly manages array bounds and data integrity.

$(10$ M$)$