// Fig. 11.11: fig11_11.cpp
// String class test program.
#include <iostream>
using std::cout;
using std::endl;
using std::boolalpha;

#include "String.h"

int main()
{
   String s1( "happy" );
   String s2( " birthday" );
   String s3;

   // test overloaded equality and relational operators
   cout << "s1 is \"" << s1 << "\"; s2 is \"" << s2
      << "\"; s3 is \"" << s3 << '\"' 
      << boolalpha << "\n\nThe results of comparing s2 and s1:"
      << "\ns2 == s1 yields " << ( s2 == s1 )
      << "\ns2 != s1 yields " << ( s2 != s1 )
      << "\ns2 >  s1 yields " << ( s2 > s1 )
      << "\ns2 <  s1 yields " << ( s2 < s1 )
      << "\ns2 >= s1 yields " << ( s2 >= s1 )
      << "\ns2 <= s1 yields " << ( s2 <= s1 );
      

   // test overloaded String empty (!) operator
   cout << "\n\nTesting !s3:" << endl;

   if ( !s3 )
   {
      cout << "s3 is empty; assigning s1 to s3;" << endl;
      s3 = s1; // test overloaded assignment
      cout << "s3 is \"" << s3 << "\"";
   } // end if

   // test overloaded String concatenation operator
   cout << "\n\ns1 += s2 yields s1 = ";
   s1 += s2; // test overloaded concatenation
   cout << s1;

   // test conversion constructor
   cout << "\n\ns1 += \" to you\" yields" << endl;
   s1 += " to you"; // test conversion constructor
   cout << "s1 = " << s1 << "\n\n";

   // test overloaded function call operator () for substring
   cout << "The substring of s1 starting at\n"
      << "location 0 for 14 characters, s1(0, 14), is:\n"
      << s1( 0, 14 ) << "\n\n";

   // test substring "to-end-of-String" option
   cout << "The substring of s1 starting at\n"
      << "location 15, s1(15), is: "
      << s1( 15 ) << "\n\n"; 

   // test copy constructor
   String *s4Ptr = new String( s1 );  
   cout << "\n*s4Ptr = " << *s4Ptr << "\n\n";

   // test assignment (=) operator with self-assignment
   cout << "assigning *s4Ptr to *s4Ptr" << endl;
   *s4Ptr = *s4Ptr; // test overloaded assignment
   cout << "*s4Ptr = " << *s4Ptr << endl;

   // test destructor
   delete s4Ptr;     

   // test using subscript operator to create a modifiable lvalue
   s1[ 0 ] = 'H';      
   s1[ 6 ] = 'B';
   cout << "\ns1 after s1[0] = 'H' and s1[6] = 'B' is: "
      << s1 << "\n\n";

   // test subscript out of range
   cout << "Attempt to assign 'd' to s1[30] yields:" << endl;
   s1[ 30 ] = 'd'; // ERROR: subscript out of range
   return 0;
} // end main

/**************************************************************************
 * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and               *
 * Pearson Education, Inc. 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.                     *
 **************************************************************************/