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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP')
| -rw-r--r-- | Bachelor/Prog2/Codebeispiele/7_ch21/fig21_20.CPP | 68 |
1 files changed, 68 insertions, 0 deletions
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 <iostream>
+
+using std::cout;
+using std::endl;
+
+#include <set>
+
+// define short name for set type used in this program
+typedef std::set< double, std::less< double > > double_set;
+
+#include <algorithm>
+
+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. *
+ *************************************************************************/
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