How to solve this kind of error in C++?

Question

C++ / C#

Good day, Khabrovchani and not only :)
I wrote a simple bubble sorting program. Very simple.
Instead of the usual sorted numbers, it shows a negative number, like: -842150451 (in all cells of the array)

#include <iostream>
#include <conio.h>

using namespace std;

int main()
{
  setlocale(LC_ALL, "Russian");
  cout << "\t\t***Сортировка пузырьком***\n\n";

  int m;

  cout << "Введите кол-во массивов: ";
  cin >> m;

  int *D = new int [m];

  cout << "Заполните весь массив:\n";

  for (int i = 0; i < m; i++)
  {
    cout << "D[" << i << "] = ";
    while (!(cin >> D[m]))
    {
      cin.clear();
      while (cin.get() != '\n');
      cout << "D[" << i << "] = ";
    }
  }

  for (int i = 0; i < m; i++)
  {
      for (int j = m - 1; j > i; j--)
      {
        if (D[j] < D[j - 1])
        {
          swap(D[j], D[j - 1]);
        }
      }
  }
  
  for (int i = 0; i < m; i++)
  {
      cout << "D[" << i << "] = " << D[i] << endl;
  }
  cout << "Массив рассортирован!!!\n";

  _getch();
  return 0;
}

I will be grateful for the hint!

Answer 1

Replace
the line with
And yes, as noted above, it’s better not
PS
And usually such values ​​​​when output or in debugging can mean that you are reading an uninitialized memory area.

Answer 2

The best way to find a bug is to start debugging step by step and see how the values ​​of the variables change at each step. Most likely, the array is initially filled incorrectly.
PS And yet, the "number of arrays" in your program is always 1. Only the size (number of elements) of the array changes.