// STRING2.H
// Definition of a String class
#ifndef STRING1_H
#define STRING1_H

#include <iostream.h>
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class String {
   friend ostream &operator<<( ostream &, const String & );
   friend istream &operator>>( istream &, String & );

public:
   String( const char * = "" ); // conversion constructor
   String( const String & );    // copy constructor
   ~String();                   // destructor
  
   const String &operator=( const String & );  // assignment
   String &operator+=( const String & );     // concatenation
   
   bool operator!() const;                   // is String empty?
   bool operator==( const String & ) const;  // test s1 == s2
   bool operator!=( const String & ) const;  // test s1 != s2
   
   bool operator<( const String & )  const;  // test s1 < s2
   bool operator>( const String & )  const;  // test s1 > s2
   
   bool operator>=( const String & ) const;  // test s1 >= s2
   bool operator<=( const String & ) const;  // test s1 <= s2
  
   char &operator[]( int );        // return char reference
   String &operator()( int, int ); // return a substring
  
   int getLength() const;        // return string length
private:
   char *sPtr;                   // pointer to start of string
   int length;                   // string length 
};

#endif
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