#include <iostream>
#include <string>
using namespace std;

// file: exhaust4.cpp
// demonstrate logical operator &&
// sort by exhaustive checking


int main()
{
   int n1, n2, n3, n4;

   cout << "Enter four numbers." << endl;
   cin >> n1 >> n2 >> n3 >> n4;

   cout << "The numbers, in order, are: ";
   if (n1 < n2 && n2 < n3 && n3 < n4) 
      cout << n1 << " " << n2 << " " << n3 << " " << n4;
   if (n1 < n2 && n2 < n4 && n4 < n3) 
      cout << n1 << " " << n2 << " " << n4 << " " << n3;
   if (n1 < n3 && n3 < n2 && n2 < n4) 
      cout << n1 << " " << n3 << " " << n2 << " " << n4;
   if (n1 < n3 && n3 < n4 && n4 < n2) 
      cout << n1 << " " << n3 << " " << n4 << " " << n2;
   if (n1 < n4 && n4 < n2 && n2 < n3) 
      cout << n1 << " " << n4 << " " << n2 << " " << n3;
   if (n1 < n4 && n4 < n3 && n3 < n2) 
      cout << n1 << " " << n4 << " " << n3 << " " << n2;

   if (n2 < n1 && n1 < n3 && n3 < n4) 
      cout << n2 << " " << n1 << " " << n3 << " " << n4;
   if (n2 < n1 && n1 < n4 && n4 < n3) 
      cout << n2 << " " << n1 << " " << n4 << " " << n3;
   if (n2 < n3 && n3 < n1 && n1 < n4) 
      cout << n2 << " " << n3 << " " << n1 << " " << n4;
   if (n2 < n3 && n3 < n4 && n4 < n1) 
      cout << n2 << " " << n3 << " " << n4 << " " << n1;
   if (n2 < n4 && n4 < n1 && n1 < n3) 
      cout << n2 << " " << n4 << " " << n1 << " " << n3;
   if (n2 < n4 && n4 < n3 && n3 < n1) 
      cout << n2 << " " << n4 << " " << n3 << " " << n1;

   if (n3 < n1 && n1 < n2 && n2 < n4) 
      cout << n3 << " " << n1 << " " << n2 << " " << n4;
   if (n3 < n1 && n1 < n4 && n4 < n2) 
      cout << n3 << " " << n1 << " " << n4 << " " << n2;
   if (n3 < n2 && n2 < n1 && n1 < n4) 
      cout << n3 << " " << n2 << " " << n1 << " " << n4;
   if (n3 < n2 && n2 < n4 && n4 < n1) 
      cout << n3 << " " << n2 << " " << n4 << " " << n1;
   if (n3 < n4 && n4 < n1 && n1 < n2) 
      cout << n3 << " " << n4 << " " << n1 << " " << n2;
   if (n3 < n4 && n4 < n2 && n2 < n1) 
      cout << n3 << " " << n4 << " " << n2 << " " << n1;

   if (n4 < n1 && n1 < n2 && n2 < n3) 
      cout << n4 << " " << n1 << " " << n2 << " " << n3;
   if (n4 < n1 && n1 < n3 && n3 < n2) 
      cout << n4 << " " << n1 << " " << n3 << " " << n2;
   if (n4 < n2 && n2 < n1 && n1 < n3) 
      cout << n4 << " " << n2 << " " << n1 << " " << n3;
   if (n4 < n2 && n2 < n3 && n3 < n1) 
      cout << n4 << " " << n2 << " " << n3 << " " << n1;
   if (n4 < n3 && n3 < n1 && n1 < n2) 
      cout << n4 << " " << n3 << " " << n1 << " " << n2;
   if (n4 < n3 && n3 < n2 && n2 < n1) 
      cout << n4 << " " << n3 << " " << n2 << " " << n1;

   cout << endl;
   return 0;
}

/*

Sample output:

prompt> exhaust3
Enter four numbers.
1 2 3 4
The numbers, in order, are: 1 2 3 4

prompt> exhaust4
Enter four numbers.
4 3 2 1
The numbers, in order, are: 1 2 3 4

prompt> exhaust4
Enter four numbers.
1 4 2 3
The numbers, in order, are: 1 2 3 4

prompt> exhaust4
Enter four numbers.
4 1 2 3
The numbers, in order, are: 1 2 3 4

prompt> exhaust4
Enter four numbers.
6 18 2 45
The numbers, in order, are: 2 6 18 45

*/