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// Fig. 16.2: fig16_02.cpp
// Demonstrating string comparison capabilities.
#include <iostream>
using std::cout;
using std::endl;
#include <string>
using std::string;
int main()
{
string string1( "Testing the comparison functions." );
string string2( "Hello" );
string string3( "stinger" );
string string4( string2 );
cout << "string1: " << string1 << "\nstring2: " << string2
<< "\nstring3: " << string3 << "\nstring4: " << string4
<< "\n\n";
// comparing string1 and string4
if ( string1 == string4 )
cout << "string1 == string4\n";
else { // string1 != string4
if ( string1 > string4 )
cout << "string1 > string4\n";
else // string1 < string4
cout << "string1 < string4\n";
}
// comparing string1 and string2
int result = string1.compare( string2 );
if ( result == 0 )
cout << "string1.compare( string2 ) == 0\n";
else // result != 0
if ( result > 0 )
cout << "string1.compare( string2 ) > 0\n";
else // result < 0
cout << "string1.compare( string2 ) < 0\n";
// comparing string1 (elements 2-5) and string3 (elements 0-5)
result = string1.compare( 2, 5, string3, 0, 5 );
if ( result == 0 )
cout << "string1.compare( 2, 5, string3, 0, 5 ) == 0\n";
else // result != 0
if ( result > 0 )
cout << "string1.compare( 2, 5, string3, 0, 5 ) > 0\n";
else // result < 0
cout << "string1.compare( 2, 5, string3, 0, 5 ) < 0\n";
// comparing string2 and string4
result = string4.compare( 0, string2.length(), string2 );
if ( result == 0 )
cout << "string4.compare( 0, string2.length(), "
<< "string2 ) == 0" << endl;
else // result != 0
if ( result > 0 )
cout << "string4.compare( 0, string2.length(), "
<< "string2 ) > 0" << endl;
else // result < 0
cout << "string4.compare( 0, string2.length(), "
<< "string2 ) < 0" << endl;
// comparing string2 and string4
result = string2.compare( 0, 3, string4 );
if ( result == 0 )
cout << "string2.compare( 0, 3, string4 ) == 0" << endl;
else // result != 0
if ( result > 0 )
cout << "string2.compare( 0, 3, string4 ) > 0" << endl;
else // result < 0
cout << "string2.compare( 0, 3, string4 ) < 0" << endl;
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. *
*************************************************************************/
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