lesson9_gr2

#include <iostream>
#include <ctime>

using namespace std;

void test1(int arr[]) {
    arr[0] = arr[0] + 1;
}

void test2() {
    int b[]{ 3, 56 };
    cout << b[0] << endl;
    test1(b);
    cout << b[0] << endl;
    cout << b << " " << b[0] << " " << *b << endl;
    cout << b + 1 << " " << (b + 1)[0] << " " << *(b + 1) << endl;
    // arr[id] ~ *(arr + id)
}


void showArr(const int sz, const int arr[]) {
    for (int k = 0; k < sz; k++) {
        cout << arr[k] << " ";
    }
    cout << endl;
}

template<class Type>
void showArr(const int sz, const Type arr[]) {
    for (int k = 0; k < sz; k++) {
        cout << arr[k] << " ";
    }
    cout << endl;
}

void task1() {
    const int sz1 = 5;
    int arr[]{ 1, 2, 3, 4, 5 };
    showArr(sz1, arr);
    int arr2[sz1];
    for (int k = 0; k < sz1; k++) {
        arr2[k] = arr[sz1 - k - 1];
    }
    showArr(sz1, arr2);
}

void test3() {
    int a = 12;
    int b = 23;
    swap(a, b);
    int b2 = 13;
    int b3 = 7;
    cout << b2 << " && "
         << b3 << " = "
         << (b2 & b3) << endl;

    cout << &b2 << endl;
    int *c = &b2;

    double verylongnameforme = 12.4;
    double& x = verylongnameforme;

    cout << x << " " << verylongnameforme << endl;
    x++;
    cout << x << " " << verylongnameforme << endl;
    verylongnameforme = -1.34234342;
    cout << x << " " << verylongnameforme << endl;
}

void test4() {
    srand(time(NULL));
    int sz = 10;
    int* pV = new int[sz];
    const int min = -10;
    const int max = 10;
    for (int k = 0; k < sz; k++) {
        pV[k] = min + rand() % (max - min + 1);
    }
    showArr(sz, pV);
    // считаем количество
    int sz_positive = 0, sz_negative = 0;
    for (int k = 0; k < sz; k++) {
        if (pV[k] > 0)
            sz_positive++;
        else if (pV[k] < 0) {
            sz_negative++;
        }
    }
    // выделяем память
    int* pPositive = new int[sz_positive];
    int* pNegative = new int[sz_negative];
    // заполняем
    int idPosit = 0, idNegat = 0;
    for (int k = 0; k < sz; k++) {
        if (pV[k] > 0)
            pPositive[idPosit++] = pV[k];
        else if (pV[k] < 0) {
            pNegative[idNegat++] = pV[k];
        }
    }
    cout << "Positive: ";
    showArr(sz_positive, pPositive);
    cout << "Negative: ";
    showArr(sz_negative, pNegative);


    /*
    for (int k = 0; k < sz; k++) {
        cout << pV[k] << " ";
    }
    */


    cout << endl;
    delete[] pPositive;
    delete[] pNegative;
    delete[] pV;
}

void test5() {
    const int sz = 5;
    int arr_int[sz]{ 1, 2, 3, 4, 5 };
    char arr_char[sz]{ 'a', 'b', 'c', 'd', 'e' };
    double arr_double[sz]{ 1.5, 1.6, 1.7, 1.8, 1.9 };

    showArr(sz, arr_int);
    showArr(sz, arr_char);
    showArr(sz, arr_double);

}

void main() {
    //task1();
    //test2();
    //task2();
    //test3();
    //test4();
    test5();
}