sorting and searching

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define NAME_LENGTH 100
/* 2. Write a program to show the top students from a class given
 * their names and grades. The program should read the names of
 * the students and their grades from the keyboard. The program
 * will display a menu and allow the user to sort the students by
 * alphabetic order or by grades. For example the menu can look like
 * this:

 0. Exit program
 1. Give N, number of students
 2. Enter the students
 3. Display class in alphabetic order
 4. Display class creating a top based on grades
 5. Display the first 3 students according to their grades

 * but feel free to improve.
 */

// Representation of table (first row represents the array index/position)
// +-----------------+------------------------------------------+
// | 0               | 1-99                                     |
// +-----------------+------------------------------------------+
// | grade (1 to 10) | String of name (including '\0') |
// +-----------------+------------------------------------------+

/* @table: table of students (array of strings)
 * @m: number of rows
 */

void addStudent(char (*table)[100], unsigned *m) {
    char s[100];
    unsigned i = 0, j;
    table = realloc(table, sizeof(char[*m][NAME_LENGTH]));
    printf("Type the name of the student:\n");
    // read until newline ('\n')
    fgets(&table[*m - 1][1], 99, stdin);
    // remove the newline
    //table[*m - 1][strlen(table[*m - 1])] = '\0';
    printf("Type the grade of the student:\n");
    int grade;
    do {
        scanf("%d", &grade); // might improve later
    } while (grade > 10 || grade < 1);
    // placing the grade in the table
    table[*m - 1][0] = grade;
    // placing the name in the table
    //memcpy(&table[*m-1][1], s, strlen(s) + 1); // +1 for the terminating NULL character
    *m = *m+1;
}

int main() {
    unsigned size = 1;
    // allocating 1 byte because if size is 0, the return value depends on the particular library implementation (it may or may not be a null pointer)
    char (*students)[100] = malloc(1 * sizeof(char));
    addStudent(students, &size);
    printf("Name of first student:\n%c",(*(students+0)+1));
    //addStudent(students, &size);
    free(students);
    return 0;
}

//getdelim(char **lineptr, size_t *n, int delim, FILE *stream); (?): why does it take n as a pointer instead of simply n?