first_function

#include <iostream>

using namespace std;

// тут ваша функция "сумма двух чисел"

double my_sum(double x, double y) {
    return x + y;
}


int get_rand(int a, int b) {
    return rand() % (b - a + 1) + a;
}

void show_hello() {
    cout << "Hello" << endl;
}

double my_comp(double x) {
    return (x == 0) ? 0 : (x < 0) ? -1 : 1;
    //return (x > 0) ? 1 : (x < 0) ? -1 : 0;
}

int get_max(int x, int y) {
    int res = x;
    if (x < y)
        res = y;
    return res;

    // return (x > y) ? x: y;
}

void task0() {
    cout << my_sum(5, 8) << endl;
    cout << 5 + 8 << endl;

    int t = my_sum(15, 8);
    cout << t << endl;

    int val = 5;
    t = my_sum(val, val);
    cout << t << endl;

    cout << "-----------------------" << endl;

    for (int k = 0; k < 10; ++k)
        cout << get_rand(-10, 10) << endl;

    cout << "-----------------------" << endl;

    for (int k = 0; k < 10; ++k)
        cout << get_rand(-10, 10) << endl;
}

int get_cube(int x) {
    //cout << "CUBE" << endl;
    //return x * x * x;
    return pow(x, 3);
}

bool is_prime_bad(int x) {
    const int n = 11;
    int arr[n]{ 1,2,3,5,7,9,11,13,17,19,23 };
    for (int k = 0; k < n; ++k) {
        if (x == arr[k])
            return true;
    }
    return false;
}

bool is_prime(int x) {
    if (x <= 0)
        return false;
    for (int v = 2; v < sqrt(x); ++v) {
        if (x % v == 0)
            return false;
    }
    return true;
}

unsigned long long factorial(int x) {
    unsigned long long res = 1;
    if (x < 2)
        return res;
    while (x > 1) {
        res *= x;
        x -= 1;
    }
    return res;
}

void show_rectangle(int n, int k) {
    for (int y = 0; y < n; y++) {
        for (int x = 0; x < k; x++) {
            if (x == 0 || y == 0 ||
                x == k - 1 || y == n - 1)
                cout << "+";
            else
                cout << " ";
        }
        cout << endl;
    }
}


int main() {
    srand(time(NULL));
    // адрес а не вызов

    cout << my_comp(-10) << " "
         << my_comp(11) << " "
         << my_comp(0) << endl;


    cout << get_max(-100, 100) << endl;

    cout << get_rand << endl;

    cout << is_prime(17) << endl;
    cout << factorial(10) << endl;
    show_rectangle(7, 14);

    return 0;
}