#include <iostream>


using namespace std;



void vop(int **arr,int row, int cols)/*Функция создания и заполнения массива*/
{

    for (int i = 0; i < row; i++)
    {
        for (int j = 0; j < cols; j++)
        {
            cout << "Введите " << j + 1 << " элемент " << i + 1 << " строки: ";
            cin >> arr[i][j];

        }

        cout << endl;
    }

    cout << endl;

    for (int i = 0; i < row; i++)
    {
        for (int j = 0; j < cols; j++)
        {
            cout << arr[i][j] << "   ";
        }

        cout << endl;
    }
}

int main()
{
    setlocale(LC_ALL, "rus");



    int row;
    int cols;
    cout << "===========Первая матрица=============" << endl;

    cout << "Введите количество строк: ";
    cin >> row;
    cout << endl;
    cout << "Введите колочесиво столбцов: ";
    cin >> cols;
    cout << endl;

    int** arr = new int* [row];

    for (int i = 0; i < row; i++)
    {
        arr[i] = new int[cols];
    }



    vop(arr, row, cols);


    /*================================================================================================================*/

    int row1;
    int cols1;
    cout << "===========Вторая матрица=============" << endl;

    cout << "Введите количество строк: ";
    cin >> row1;
    cout << endl;
    cout << "Введите колочесиво столбцов: ";
    cin >> cols1;
    cout << endl;

    int** arr1 = new int* [row1];

    for (int i = 0; i < row1; i++)
    {
        arr1[i] = new int[cols1];
    }

    vop(arr1, row1, cols1);



    /*================================================================================================================*/

    int sum = 0;
    int el = 0;

    int row2;
    int cols2;

    row2 = row;

    cols2 = cols1;


    int** arr2 = new int* [row2];

    for (int i = 0; i < row2; i++)
    {
        arr2[i] = new int[cols2];
    }

    if (cols = row1)
    {

        for (int k = 0; k < row; k++)
        {

            for (int i = 0; i < cols1; i++)
            {
                for (int j = 0; j < cols; j++)
                {
                    el = arr[k][j] * arr1[j][i];
                    sum += el;
                }

                arr2[k][i] = sum;

                sum = 0;

            }

        }

        /*================================================================================================================*/

        cout << "===========Сумма матриц===================" << endl;
        cout << endl;
        for (int i = 0; i < row; i++)
        {
            for (int j = 0; j < cols1; j++)
            {
                cout << arr2[i][j] << "   ";
            }

            cout << endl;
        }

    }

    else
    {
        cout << "Количество стобцов в первой матрице должно быть равно количеству строк во второй!" << endl;

    }

    /*Удаление массивов*/

    for (int i = 0; i < row; i++)
    {
        delete[] arr[i];
    }

    for (int i = 0; i < row1; i++)
    {
        delete[] arr1[i];
    }


    for (int i = 0; i < row; i++)
    {
        delete[] arr2[i];
    }

    delete[] arr;
    delete[] arr1;
    delete[] arr2;
}