C++ ตัวเลขปิรามิด

  for (int i = 9; i >=1; i--)
{
for (int j = 1; j <=i; j++)
{
cout << "-";
}
for (int k = 1; k <= 10 - i; k++)
{
cout <<k;
}
for (int x = 9-i; x >=1; x--)
{
cout << x;
}
cout << endl;
}
cout << endl << endl << endl;