lesson18_322

#include <iostream>

using namespace std;

int get_rand(int a, int b);

void task0() {
    int arr[6];
    for (int k = 0; k < size(arr); k++) {
        arr[k] = 3 + 2 * k;
    }

    int summ = 0;
    for (int k = 0; k < size(arr); k++) {
        summ += arr[k];
    }

    for (int k = 0; k < size(arr); k++) {
        cout << arr[k] << " ";
    }
    cout << endl;
    cout << summ << " " << (double)summ / size(arr) << endl;
}

void test_arr_2D() {
    const int size1 = 4;
    const int size2 = 5;

    int arr[size1][size2];

    arr[0][0] = 12;

    for (int k = 0; k < size1; k++) {
        for (int n = 0; n < size2; n++) {
            arr[k][n] = (k + 1) * (n + 1);
        }
    }

    for (int k = 0; k < size1; k++) {
        for (int n = 0; n < size2; n++) {
            cout << arr[k][n] << "\t";
        }
        cout << endl;
    }

    int x = 255;
    cout << &x << endl;
    cout << &(arr[0][0]) << " " << arr << " " << arr[0]<< endl;
}

void test_arr2D_like_arr1D() {
    const int size1 = 4;
    const int size2 = 5;
    int arr[size1 * size2];

    //arr[0][0] = 12;

    for (int k = 0; k < size1; k++) {
        for (int n = 0; n < size2; n++) {
            arr[k * size2 + n] = (n + 1) * (k + 1);
        }
    }

    for (int k = 0; k < size1; k++) {
        for (int n = 0; n < size2; n++) {
            cout << arr[k * size2 + n] << "\t";
        }
        cout << endl;
    }


}

const int size_h = 4 + 1;
//const int size_w = 5 + 1;
#define SIZE_W 5 + 1

void gen_arr(int size_h, int size_w, int arr[][SIZE_W]) {
    for (int k = 0; k < size_h; k++) {
        for (int n = 0; n < size_w; n++) {
            arr[k][n] = get_rand(-10, 10);
        }
    }
}

void calc_arr(int size_h, int size_w, int arr[][SIZE_W]) {

    for (int k = 0; k < size_h; k++) {
        arr[k][size_w - 1] = 0;
    }

    for (int n = 0; n < size_w-1; n++) {
        arr[size_h -1][n] = 0;
    }

    for (int k = 0; k < size_h - 1; k++) {
        for (int n = 0; n < size_w - 1; n++) {
            arr[k][size_w - 1] += arr[k][n];
            arr[size_h - 1][n] += arr[k][n];
            arr[size_h - 1][size_w - 1] += arr[k][n];
        }
    }
}

void show_arr(int size_h, int size_w, int arr[][SIZE_W]) {
    for (int k = 0; k < size_h; k++) {
        for (int n = 0; n < size_w; n++) {
            cout << arr[k][n] << "\t";
        }
        cout << endl;
    }
}

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

void test_sum2D() {


    int arr[size_h][SIZE_W];

    gen_arr(size_h-1, SIZE_W-1, arr);
    calc_arr(size_h, SIZE_W, arr);
    show_arr(size_h, SIZE_W, arr);
}

int main() {
    srand(time(NULL));
    //task0();
    //test_arr_2D();
    //test_arr2D_like_arr1D();
    test_sum2D();

    return 0;
}