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+// Fig. 8.9: fig08_09.cpp
+// String class test program.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include "string1.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 << '\"'
+ << "\n\nThe results of comparing s2 and s1:"
+ << "\ns2 == s1 yields "
+ << ( s2 == s1 ? "true" : "false" )
+ << "\ns2 != s1 yields "
+ << ( s2 != s1 ? "true" : "false" )
+ << "\ns2 > s1 yields "
+ << ( s2 > s1 ? "true" : "false" )
+ << "\ns2 < s1 yields "
+ << ( s2 < s1 ? "true" : "false" )
+ << "\ns2 >= s1 yields "
+ << ( s2 >= s1 ? "true" : "false" )
+ << "\ns2 <= s1 yields "
+ << ( s2 <= s1 ? "true" : "false" );
+
+ // test overloaded String empty (!) operator
+ cout << "\n\nTesting !s3:\n";
+
+ if ( !s3 ) {
+ cout << "s3 is empty; assigning s1 to s3;\n";
+ s3 = s1; // test overloaded assignment
+ cout << "s3 is \"" << s3 << "\"";
+ }
+
+ // 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\n";
+ 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, 0), is: "
+ << s1( 15, 0 ) << "\n\n"; // 0 is "to end of string"
+
+ // 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\n";
+ *s4Ptr = *s4Ptr; // test overloaded assignment
+ cout << "*s4Ptr = " << *s4Ptr << '\n';
+
+ // test destructor
+ delete s4Ptr;
+
+ // test using subscript operator to create 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 1992-2003 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. *
+ *************************************************************************/ \ No newline at end of file