////////////////////////////////////////////////////////
//  string.cpp  - how do I use a standard C++ string? //
////////////////////////////////////////////////////////
#include <string>
#include <iostream>
using namespace std;

void main() {

  string s = "this is a string";

  s += " that has been added to";

  s += " two times";

  cout << "\n  " << s << "\n\n";

  cout << "  its first three characters are: "
       << s[0] << ", " << s[1] << ", and " << s[2]
       << "\n\n";

  cout << "  its size is " << s.size() << " characters\n\n";

  s.erase();

  s = "this is a new set of character contents";

  cout << "  " << s << "\n\n";
}