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// Fig. 8.7: string1.h
// String class definition.
#ifndef STRING1_H
#define STRING1_H
#include <iostream>
using std::ostream;
using std::istream;
class String {
friend ostream &operator<<( ostream &, const String & );
friend istream &operator>>( istream &, String & );
public:
String( const char * = "" ); // conversion/default ctor
String( const String & ); // copy constructor
~String(); // destructor
const String &operator=( const String & ); // assignment
const 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
// test s1 != s2
bool operator!=( const String & right ) const
{
return !( *this == right );
} // end function operator!=
// test s1 > s2
bool operator>( const String &right ) const
{
return right < *this;
} // end function operator>
// test s1 <= s2
bool operator<=( const String &right ) const
{
return !( right < *this );
} // end function operator <=
// test s1 >= s2
bool operator>=( const String &right ) const
{
return !( *this < right );
} // end function operator>=
char &operator[]( int ); // subscript operator
const char &operator[]( int ) const; // subscript operator
String operator()( int, int ); // return a substring
int getLength() const; // return string length
private:
int length; // string length
char *sPtr; // pointer to start of string
void setString( const char * ); // utility function
}; // end class String
#endif
/**************************************************************************
* (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice *
* Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
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