#include <iostream>
#include <cctype>
#include <fstream>
using namespace std;

void task1()
{
    char symbol;
    cout << "Enter words (@ to abort): ";
    while (cin >> symbol)
    {
        if (symbol == '@') break;

        if (isalpha(symbol))
        {
            if (isupper(symbol))
                symbol = tolower(symbol);
            else
                symbol = toupper(symbol);
            cout << symbol;
        }
    }
}

void task2()
{
    double mas[10];
    int mascount = 0;
    cout << "Enter up to 10 numbers: ";
    for (mascount; !cin.fail() && mascount < 10; mascount++)
    {
        cin >> mas[mascount];
    }
    if (mascount < 10)
    {
        cin.clear();
        cin.ignore();
    }
    double average = 0;
    for (int i = 0; i < mascount; i++)
    {
        average += mas[i];
    }
    average /= --mascount;
    int count = 0;
    for (int i = 0; i < mascount; i++)
    {
        if (mas[i] > average) count++;
    }
    cout << "Average: " << average << endl;
    cout << "Count of numbers that > average: " << count << endl;
}

void task3()
{
    string word;
    int vowel = 0, consonants = 0, other = 0;;
    cout << "Enter words(q to quit): ";
    while (cin >> word)
    {
        if (word == "q") break;
        if (isalpha(word[0]))
        {
            switch (word[0]) {
            case 'a': case'e': case'i': case 'o': case 'u': case 'A': case'E': case'I': case 'O': case 'U':
                vowel++;
                break;
            default: consonants++;
            }
        }
        else other++;
    }
    cout << vowel << " words beginning with vowels\n";
    cout << consonants << " words beginning with consonants\n";
    cout << other << " other\n";
}

void task4()
{
    fstream fin;
    fin.open("C:/Users/Student.DESKTOP-9N1N9O3/Desktop/file.txt");
    while (!fin)
    {
        cerr << "File doesn't open!\n";
        cout << "Enter new file adress or \"e\" to abort: ";
        string new_file;
        cin >> new_file;
        if (new_file == "e") return;
        fin.open(new_file);
    }
    char stuff;
    int count = 0;
    while (fin >> stuff)
        count++;
    fin.close();
    cout << count;
}



double add(double lval, double rval)
{
    return lval + rval;
}

double remove(double lval, double rval)
{
    return lval - rval;
}

double multi(double lval, double rval)
{
    return lval * rval;
}

double ost(double lval, double rval)
{
    if (int(lval) != lval || int(rval) != rval)
    {
        cerr << "Numbers aren't integer!\n";
        return 0;
    }
    return int(lval) % int(rval);
}

double calculate(double lval, double rval, double (*f)(double, double))
{
    return f(lval, rval);
}


void task5()
{
    double lval, rval;
    string key;
    cout << "Non-value input will end the program.\n";
    while (true)
    {
        cout << "Enter 2 values: ";
        cin >> lval >> rval;
        if (cin.fail())
        {
            cout << "ended.";
            break;
        }

        const size_t arr_size = 4;
        double((*arr[arr_size]))(double lval, double rval);
        string func_name[arr_size];

        arr[0] = add; arr[1] = remove; arr[2] = multi; arr[3] = ost;
        func_name[0] = "add"; func_name[1] = "remove"; func_name[2] = "multi"; func_name[3] = "ost";

        for (int i = 0; i < arr_size; i++)
            cout << endl << "Result of " << func_name[i] << ": " << calculate(lval, rval, arr[i]) << endl;
        cout << endl;
    }
}

int main()
{
    task2();
}