Help! C++

Hello ! I am having some problems when i try to make a problem. It consists in erasing all the multiple white spaces and just leaving 1 space for each word.
This is the text: HelloMyName______isDelshire._______ Take de '' as white spaces. I managed to get the 'inner' multiple spaces but i do not know how to erase the ones at the beginning and at the end. This is what i did:

#include <string>
#include <iostream>
using namespace std;
class Foo
{
public:
    void removeDoubleSpaces( string t ) 
    {  
      int i;
      i = t.find("  ");
      string ch;
      if ( i > -1 )
      {
        ch = t.replace( i,2," " );
        removeDoubleSpaces (ch); 
      }
      else if ( i == -1 )
      {
        cout << t << endl;    
      }  
    }
};      
int main()
{
   Foo bar;
   bar.removeDoubleSpaces("       Hi                              my   user   is    Delshire ,    what's yours?.              ");
   cin.get();
   return 0;
}

I need to make the beginning and the ending with no spaces, with my code i have 1 space and it should not be like that

Thanks!