include iostream include algorithm using namespace std struct student

#include <iostream>
#include <algorithm>

using namespace std;

struct student {
    char name[100];
    int group;
};

int compare(const void *a, const void *b) {
    student *student1 = (student *) a;
    student *student2 = (student *) b;
    return (student1->group - student2->group);
}

int main() {
    size_t dimension = 3;

    cout << "Enter 3 students for sorting: " << endl;

    struct student students[dimension];

    string query;

    for (int i = 0; i < dimension; ++i) {
        cout << "Enter name of the student[" << i << "]" << endl;
        cin >> students[i].name;
        cout << "Enter group of the student" << i << "]" << endl;
        cin >> students[i].group;
    }

    cout << "Entered array:" << endl;

    for (int i = 0; i < dimension; ++i) {
        cout << students[i].name << " - " << students[i].group << endl;
    }

    qsort(students, dimension, sizeof(student), compare);

    cout << "Sorted array by group:" << endl;

    for (int i = 0; i < dimension; ++i) {
        cout << students[i].name << " - " << students[i].group << endl;
    }

    return 0;
}