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_28.cpp | 102 +++++++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 Bachelor/Prog2/Codebeispiele/7_ch21/fig21_28.cpp (limited to 'Bachelor/Prog2/Codebeispiele/7_ch21/fig21_28.cpp') diff --git a/Bachelor/Prog2/Codebeispiele/7_ch21/fig21_28.cpp b/Bachelor/Prog2/Codebeispiele/7_ch21/fig21_28.cpp new file mode 100644 index 0000000..9d36184 --- /dev/null +++ b/Bachelor/Prog2/Codebeispiele/7_ch21/fig21_28.cpp @@ -0,0 +1,102 @@ +// Fig. 21.28: fig21_28.cpp +// Standard library functions remove, remove_if, +// remove_copy and remove_copy_if. +#include + +using std::cout; +using std::endl; + +#include // algorithm definitions +#include // vector class-template definition + +bool greater9( int ); // prototype + +int main() +{ + const int SIZE = 10; + int a[ SIZE ] = { 10, 2, 10, 4, 16, 6, 14, 8, 12, 10 }; + + std::ostream_iterator< int > output( cout, " " ); + + std::vector< int > v( a, a + SIZE ); + std::vector< int >::iterator newLastElement; + + cout << "Vector v before removing all 10s:\n "; + std::copy( v.begin(), v.end(), output ); + + // remove 10 from v + newLastElement = std::remove( v.begin(), v.end(), 10 ); + + cout << "\nVector v after removing all 10s:\n "; + std::copy( v.begin(), newLastElement, output ); + + std::vector< int > v2( a, a + SIZE ); + std::vector< int > c( SIZE, 0 ); + + cout << "\n\nVector v2 before removing all 10s " + << "and copying:\n "; + std::copy( v2.begin(), v2.end(), output ); + + // copy from v2 to c, removing 10s in the process + std::remove_copy( v2.begin(), v2.end(), c.begin(), 10 ); + + cout << "\nVector c after removing all 10s from v2:\n "; + std::copy( c.begin(), c.end(), output ); + + std::vector< int > v3( a, a + SIZE ); + + cout << "\n\nVector v3 before removing all elements" + << "\ngreater than 9:\n "; + std::copy( v3.begin(), v3.end(), output ); + + // remove elements greater than 9 from v3 + newLastElement = + std::remove_if( v3.begin(), v3.end(), greater9 ); + + cout << "\nVector v3 after removing all elements" + << "\ngreater than 9:\n "; + std::copy( v3.begin(), newLastElement, output ); + + std::vector< int > v4( a, a + SIZE ); + std::vector< int > c2( SIZE, 0 ); + + cout << "\n\nVector v4 before removing all elements" + << "\ngreater than 9 and copying:\n "; + std::copy( v4.begin(), v4.end(), output ); + + // copy elements from v4 to c2, removing elements greater + // than 9 in the process + std::remove_copy_if( + v4.begin(), v4.end(), c2.begin(), greater9 ); + + cout << "\nVector c2 after removing all elements" + << "\ngreater than 9 from v4:\n "; + std::copy( c2.begin(), c2.end(), output ); + + cout << endl; + + return 0; + +} // end main + +// determine whether argument is greater than 9 +bool greater9( int x ) +{ + return x > 9; + +} // end greater9 + +/************************************************************************** + * (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