#include <iostream>

using namespace std;

void order(int & x, int & y)
{ if (x > y)
  { int t = x;
    x = y;
    y = t; } }

int main()
{ int a, b, c, d;
  cout << "enter the values ";
  cin >> a >> b >> c >> d;
  order(a, b); order(b, c); order(c, d);   // d is biggest 
  order(a, b); order(b, c);
  order(a, b);
  cout << "sorted = "
       << a << ", "
       << b << ", "
       << c << ", "
       << d << "\n"; }