// Read 3 numbers into an array, sort, print 
#include <iostream>
using namespace std;
void swap(double&, double&);
int main()
{ double num[3];
  int n;
  for(n=0; n<3; n++)
  {  cout<<"Enter a number: "; 
     cin>>num[n];
  } //n loop
  if (num[0] > num[1]) swap(num[0], num[1]);
  if (num[1] > num[2]) swap(num[1],num[2]);
  if (num[0] > num[1]) swap(num[0], num[1]);
  cout<<"The numbers are: "<<num[0]<<" "<<num[1]<<" "<<num[2]<<"\n"; 
  return 0;
} //main

void swap(double &n1, double &n2)
//receives n1 and n2 by reference, swaps them
{ double temp;
  temp=n1;
  n1=n2;
  n2=temp;
} //swap