Arkusz

#include <stdlib.h>
#include <random>
#include <iostream>

using namespace std;

class Array {
public:
    Array(int size) : size(size) {
        arr = (int *)malloc(size * sizeof(int));

        random_device rd;
        mt19937 gen(rd());
        uniform_int_distribution<int> dist(1, 1000);

        for (int i = 0; i < size; i++) {
            arr[i] = dist(gen);
        }
    }

    void print() {
        for (int i = 0; i < size; i++) {
            cout << i << ": " << arr[i] << endl;
        }
    }

    int find(int num) {
        int i;

        for (i = 0; i < size; i++) {
            if (arr[i] == num)
                break;
        }

        return i < size ? i : -1;
    }

    int print_odd() {
        int count = 0;

        for (int i = 0; i < size; i++) {
            if (arr[i] % 2) {
                cout << arr[i] << endl;
                count++;
            }
        }

        return count;
    }

    float avg() {
        int sum = 0;

        for (int i = 0; i < size; i++) {
            sum += arr[i];
        }

        return (float)sum / size;
    }

    ~Array() {
        free(arr);
    }

private:
    int* arr;
    int size;
};

int main() {
    Array a(8);
    a.print();

    int found = a.find(15);

    if (found != -1) {
        cout << "Found @ " << found << endl;
    }

    cout << "Liczby nieparzyste:" << endl;
    int odd = a.print_odd();
    cout << "Razem nieparzystych: " << odd << endl;
    cout << "Średnia wszystkich elementów: " << a.avg() << endl;

    return 0;
}