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

typedef struct {
	char *name;
	char *course;
} Item;

#define key(A) (A.name)
#define lt(A, B) (strcmp(key(A), key(B)) < 0)
#define le(A, B) (strcmp(key(A), key(B)) <= 0)
#define ge(A, B) (strcmp(key(A), key(B)) >= 0)
#define gt(A, B) (strcmp(key(A), key(B)) > 0)

void swap(Item a[], int i, int j) {
    Item temp = a[i];
    a[i] = a[j];
    a[j] = temp;
}

void sort(Item a[], int lo, int hi) {
    return;
}

int main(void) {
    Item students[] = {
        {"Alice", "COMP2521"},
        {"Bob", "COMP2521"},
        {"Charlie", "COMP1531"},
        {"Diana", "COMP1511"}
    };

    int n = sizeof(students) / sizeof(students[0]);

    sort(students, 0, n-1);

    for (int i = 0; i < n; i++) {
        printf("%s (%s)\n", students[i].name, students[i].course);
    }

    return 0;
}