Program for Shell Sort in C++

#include <cstdlib>
#include <ctime>
#include <iostream>

using namespace std;

int main()
  {
  const int MAX = 5;
  int a[MAX+1];
  srand((unsigned)time(0));
  for(int i=1; i<MAX+1; i++)
    {
    a[i] = (rand()%100)+1;
    cout << a[i] << "  ";
    }
  cout << "(Initial array)" << "\n";

  int x;
  int l;
  int s;
  int stop;
  int temp_x;
  x = int(MAX / 2);
  while (x > 0)
   {
   stop = 0;
   l = MAX - x;
   while (stop == 0)
     {
     s = 0;
     for (int k=1; k<=l; k++)
       {
      if (a[k] > a[k+x])
        {
        temp_x = a[k];
        a[k] = a[k+x];
        a[k+x] = temp_x;
        s = k;
        }
   }
     l = s - x;
     if (s == 0)
       {
      stop = 1;
      }
     }
   for (int i=1; i<=MAX; i++)
     {
     cout << a[i] << "  ";
     }
   cout << "\n";
   x = int(x / 2);
   }

   for(int i=1; i<MAX+1; i++)
      {
      cout << a[i] << "  ";
      }
   cout << "(Sorted array)" << "\n";
   cout << "\nPress ENTER to continue..." << endl;
   getchar();
  }