Rearranging Names

I have written this program first to only include first and last name..how could I know include the middle name?

Code:

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

int main()
{
    //initializing variables
  string str;
  int i, index;

    //prompting user to input name
  cout << "Enter a first middle and last name: "  << endl;
  
    //telling computer to read input
  getline(cin, str); 

    //setting index to look at each character until space is found
  index = str.find(' ');
  
    //setting index for read the number of characters in last name once space
                                                                    //was found
  i = index + 1;
  while(str[i])
  {
    //output last name
	  cout << str[i];
	  i++;
  }
    //setting a comma between last and first name
  cout << ", ";

    //setting index for reading the number of characters in first name
  for(i = 0; i < index; i++)
	  
      //output first name
      cout << str[i];

 
  return 0;
}

Look for another space?

Yeah I figured that out -put in order to change the output-what needs to be done to make the middle now be the last item listed?

Originally Posted by BJtoVisualcC++

Yeah I figured that out -put in order to change the output-what needs to be done to make the middle now be the last item listed?

Only be concerned with today, yesterday is history, tomorrow is a mystery, today is a gift and that is why they call it the present.

Sorry, still trying to learn how to post and post with quotes