From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001 From: Sven Eisenhauer Date: Fri, 10 Nov 2023 15:11:48 +0100 Subject: add new repo --- Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP | 68 ++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP (limited to 'Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP') diff --git a/Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP b/Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP new file mode 100644 index 0000000..76415d7 --- /dev/null +++ b/Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP @@ -0,0 +1,68 @@ +// Fig. 21.20: fig21_20.cpp +// Standard library class set test program. +#include + +using std::cout; +using std::endl; + +#include + +// define short name for set type used in this program +typedef std::set< double, std::less< double > > double_set; + +#include + +int main() +{ + const int SIZE = 5; + double a[ SIZE ] = { 2.1, 4.2, 9.5, 2.1, 3.7 }; + + double_set doubleSet( a, a + SIZE );; + std::ostream_iterator< double > output( cout, " " ); + + cout << "doubleSet contains: "; + std::copy( doubleSet.begin(), doubleSet.end(), output ); + + // p represents pair containing const_iterator and bool + std::pair< double_set::const_iterator, bool > p; + + // insert 13.8 in doubleSet; insert returns pair in which + // p.first represents location of 13.8 in doubleSet and + // p.second represents whether 13.8 was inserted + p = doubleSet.insert( 13.8 ); // value not in set + + cout << "\n\n" << *( p.first ) + << ( p.second ? " was" : " was not" ) << " inserted"; + + cout << "\ndoubleSet contains: "; + std::copy( doubleSet.begin(), doubleSet.end(), output ); + + // insert 9.5 in doubleSet + p = doubleSet.insert( 9.5 ); // value already in set + + cout << "\n\n" << *( p.first ) + << ( p.second ? " was" : " was not" ) << " inserted"; + + cout << "\ndoubleSet contains: "; + std::copy( doubleSet.begin(), doubleSet.end(), output ); + + cout << 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. * + *************************************************************************/ \ No newline at end of file -- cgit v1.2.3