Algorytm "Flaga polska" sortowanie 01

#include <iostream>

using namespace std;

struct students {
    int nrind;
    float score;
};

// data
void data( int nrind, float score ) {
    cout << "Data for how many students do you want to sort?" << endl;
    int n;
    cin >> n;
    students people[ n ];
   
    cout << "Now please pass the index number and a score for everyone." << endl;
    cout << "Your index number must contain only 5 numbers" << endl;
    cout << "Possible scores are 2 , 3 , 3.5 , 4 , 4.5 , 5" << endl;
   
    for( int i = 1; i < n; i++ )
    {
        cout << "Index number" << endl;
        cin >> people[ i ].nrind;
        if( !cin )
        {
            cout << "Pass the correct index number" << endl;
            cin.clear();
            cin.sync();
            // POWRÓT DO CIN ZCZYTUJĄCEGO NR INDEKSU
        }
        else
             cout << "Score for student " << people[ i ].nrind << endl;
       
        cin >> people[ i ].score;
        if( people[ i ].score != 2 && people[ i ].score != 3 && people[ i ].score != 3.5 && people[ i ].score != 4 && people[ i ].score != 4.5 && people[ i ].score != 5 )
        {
            cout << "You've passed a wrong score! Your score must be one of 2 , 3 , 3.5 , 4 , 4.5 , 5" << endl;
        }
        // POWRÓT DO CIN ZCZYTUJĄCEGO OCENĘ
    }
}
void sort01( int nrind, float score, int n, struct students people[] )
{
   
    for( int i = 1; i < n; i++ )
    {
        for( int j = n; j <= i; j-- )
        {
            if( people[ i ].score > people[ n ].score )
            {
                swap( people[ i ].score, people[ n ].score );
            }
        }
    }
}

void show_data( int nrind, float score, int n, struct students people[] )
{
    for( int i = 0; i < n; i++ )
    {
        cout << people->nrind[ i ] << " " << people->score[ i ] << endl;
    }
}

void highest_score( int nrind, float score, int n, struct students people )
{
    float max = people.score[ 0 ];
    cout << "Highest scores were " << endl;
    int how_many = 0;
    for( int i = 1; i < n; i++ )
    {
       
        if( people.score[ i ] >= max )
        {
            max = people.score[ i ];
            cout << people.nrind[ i ] << " " << people.score[ i ] << endl;
            how_many++;
           
        }
       
    }
    cout << how_many << " students got the highest score" << endl;
}

int main()
{
   
    int nrind, score, n;
    char choice;
    cout << "Welcome to the sorting program!" << endl;
   
    cout << "Can we start? Press [Y] for yes or [N] for no." << endl;
    cin >> choice;
   
    if( choice == 'Y' )
    {
        data( nrind, score );
        sort01( nrind, score, n, students people ); //JAK PRZEKAZAĆ STRUKTURĘ??
        show_data( nrind, score, n )
        highest_score( nrind, score, n )
    }
    else
    if( choice == 'N' )
    {
        cout << "See you next time!" << endl;
    }
    else
         cout << "Wrong character. Pick [Y] for yes or [N] for no" << endl;
   
    return 0;
}