#include "pch.h"
#include <iostream>
#include <fstream>
#include <ctime>
#include <iomanip>
using namespace std;


void ChangeRows(double **a, int n, int m)
{
    double* temp;
    for (int i = 0; i < n - 1; i++) {
        for (int j = 0; j < n - i - 1; j++) {
            if (a[j][0] > a[j + 1][0]) {
                temp = a[j];
                a[j] = a[j + 1];
                a[j + 1] = temp;
            }
        }
    }
}

int main()
{
    setlocale(0, "");
    srand(time(0));
    double **a, b = 0;
    int i, j, n, m, k;
    cout << "Введите размер n*m" << "\n";
    cin >> n >> m;
    a = new double*[n];
    for (i = 0; i < n; i++)
        a[i] = new double[m];
    for (i = 0; i < n; i++)
        for (j = 0; j < m; j++)
            a[i][j] = rand() % 50 - 24;
    cout << "Матрица:" << endl;
    for (i = 0; i < n; i++)
    {
        for (j = 0; j < m; j++)
            cout << setw(10)<< a[i][j] << "\t";
        cout << endl;
    }
    cout << "введите :" << endl;
    ChangeRows(a, n, m);
    cout << "Результат:" << endl;
    for (i = 0; i < n; i++)
    {
        for (j = 0; j < m; j++)
            cout << setw(10) << a[i][j] << "\t";
        cout << endl;
    }
    for (i = 0; i < n; i++)
        delete[] a[i];
    delete[]a;
    system("pause");
    return 0;
}