Question

Create a C program to implement a grade book.

Must follow these guidelines:

1. Use #define to define MAX_SIZE1 as 20, and MAX_SIZE2 as 10

2. Use typedef to define the following struct type:

struct {

char name[MAX_SIZE1];

int scores[MAX_SIZE2];

}

3. The program accepts from the comand line an integer n (<= 30) as the number of students in the class. You may assume that the input will always be valid.

4. Dynamically allocate memory for an array of n entries; each entry is a structure defined in step 2.

5. Store student name and randomly generate 10 scores in the range between 50 and 100 for each student in the dynamically allocated memory. You may declare and initialize an array of 30 names in an array, and use them as students names.

6. Use qsort to sort the array based on the total score in the descending order. How do you implement comparision function for qsort?

7. Output the sorted grade book in a format of your choice.

8. Output the elapsed time of your program execution.