Working with vectors and loops

gistfile1.cpp

/*
Javier C
This program is designed to order numbers ASC DESC that user has given
*/

#include <iostream>
#include <vector>

using namespace std;

int main()
{
  int first, last;
  vector<int> vints;
	//User imputs
  cout	<<	"Enter your first number => ";
  cin	>>	first;
  cout	<<	"Enter your second number => ";
  cin	>>	last;
	//inserting numbers into vector and adding in-between numbers
  for (int i = first; i <= last; ++i)
    {
      vints.push_back(i);
    }

  cout	<<	"Output using for loop" << endl;
	//finding last element
  int lastelem = vints.size() - 1;
	//output numbers ASC 
  for (int i = 0; i < vints.size(); ++i)
    {
	//format output with comma's
	if(i == lastelem)
	{
		cout << vints.at(i) << endl;
	}
	else 
		cout << vints.at(i) << ",";
    }
	//output numbers DESC
  int i = lastelem;
  cout	<<	"Output using while loop" << endl;
  while(i >= 0)
	{
	//format output with comma's
		if(i == 0)
		{
			cout << vints.at(i) << endl;
		}
		else 
			cout << vints.at(i) << ",";
		i--;
	}
  
  cout <<	"Enough with numbers already" << endl;
  return 0;
}