Kontrolno2_BP2_zad1

#include <iostream>
#include <random>
#include <conio.h>
using namespace std;

auto input(int *, size_t, size_t &, size_t &) -> void;
auto output(int *, size_t) -> void;
auto multiply_element(int *, size_t) -> void;
auto divide_element(int *, size_t) -> void;

int main() {

    random_device rd;
    mt19937 gen(rd());
    uniform_int_distribution<> dist(1, 16);

    size_t count(dist(gen)), db3 = 0, _else = 0, choice;

    int *array = new int[count], *asd = new int[db3], *asdf = new int[_else];;


    do {
        system("cls");

        cout << "Menu:\n\n";
        cout << "[1] Input array\n";
        cout << "[2] Create two new arrays\n";
        cout << "[3] Multiply by 3 in the new array\n";
        cout << "[4] Divide by 4 each element that is divisable by 4\n";
        cout << "[5] Print all arrays\n\n";
        cout << "[0] Exit\n";
        cout << "Your choice: ";
        cin >> choice;

        switch (choice) {
            case 1:
                system("cls");
                input(array, count, db3, _else);

                cout << "The array is generated successfully!\nCount of the elements: " << count << "\n\nPress any key to get back to the menu!";
                _getch();
                break;
            case 2:
                system("cls");

                asd = new int[db3];
                asdf = new int[_else];

                _else = db3 = 0;

                for (size_t i = 0; i < count; i++)
                    array[i] & 0x3 ? asd[db3++] = array[i] : asdf[_else++] = array[i];

                cout << "The arrays are created successfully!\n\nPress any key to get back to the menu!";
                _getch();
                break;
            case 3:
                system("cls");
                multiply_element(asd, db3);

                cout << "Array #1 is multiplied by 3 successfully!\n\nPress any key to get back to the menu!";
                _getch();
                break;
            case 4:
                system("cls");
                divide_element(asdf, _else);

                cout << "Array #2 is divided by 4 successfully!\n\nPress any key to get back to the menu!";
                _getch();
                break;
            case 5:
                system("cls");

                cout << "Original array: \n\n";
                output(array, count);

                cout << "\nNew array #1: (Multiplied by 3)\n\n";
                output(asd, db3);

                cout << "\nNew array #2: (Divided by 4)\n\n";
                output(asd, db3);

                cout << "\n\nPress any key to get back to the menu!";
                _getch();
                break;

            default:
                break;
        }

    } while (choice != 0);



    output(asd, db3);
    multiply_element(asd, db3);
    output(asd, db3);

    return 0;
}

auto output(int *array, size_t size) -> void {
    if (!size || size == 0)
        cout << "Error: invalid size!\n";
    else
        for (size_t i = 0; i < size; i++)
            if(i == (size - 1))
                cout << "#: " << i << " | Element: " << array[i] << endl;
            else
                cout << "#: " << i << " | Element: " << array[i] << " | ";
}

auto multiply_element(int *array, size_t size) -> void {
    if (!size || size == 0)
        cout << "Error: invalid size!\n";
    else
        for (size_t i = 0; i < size; i++)
            array[i] = (array[i] >> 1) + array[i];
}

auto divide_element(int *array, size_t size) -> void {

    if (!size || size == 0)
        cout << "Error: invalid size!\n";
    else
        for (size_t i = 0; i < size; i++)
            if (array[i] & 0x4)
                array[i] <<= 2;
}

auto input(int *array, size_t size, size_t &db3, size_t &_else) -> void {

    random_device rd;
    mt19937 gen(rd());
    uniform_int_distribution<> dist(10, 66);

    for (size_t i = 0; i < size; i++) {
        array[i] = dist(gen);

        array[i] & 0x3 ? db3++ : _else++;
    }
}