C++ Tutorial/string/string data

#include <iostream>
using std::cout;
using std::endl;
#include <string>
using std::string;
int main()
{
   string string1( "STRINGS" );
   const char *ptr1 = 0;
   ptr1 = string1.data();
   for ( int i = 0; i < string1.length(); i++ )
      cout << *( ptr1 + i ); // use pointer arithmetic
   return 0;
}