Task2

// переставить k и i строки, переставить l и j столбцы
#include <iostream>
using namespace std;

int main() {
    int n;
    cout << "Enter n\n";
    cin >> n;

    int** matrix = new int*[n];
    for (int i = 0; i < n; ++i)
        *(matrix + i) = new int[n];
    cout << "Enter content of array\n";
    for (int i = 0; i < n; ++i)
        for (int j = 0; j < n; ++j)
            cin >> *(*(matrix + i) + j);
    int k, i, l, j;
    cout << "Enter k, i, l and j values\n";
    cin >> k >> i >> l >> j;

    //swap rows
    for (int it = 0; it < n; ++it)
        swap(*(*(matrix + k-1) + it), *(*(matrix + i-1) + it));
    //swap columns
    for (int it = 0; it < n; ++it)
        swap(*(*(matrix + it) + l-1), *(*(matrix + it) + j-1));



    for (int i = 0; i < n; ++i)
        delete[] * (matrix + i);
    delete[] matrix;
}