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// Fig. 21.28: fig21_28.cpp
// Standard library functions remove, remove_if,
// remove_copy and remove_copy_if.
#include <iostream>
using std::cout;
using std::endl;
#include <algorithm> // algorithm definitions
#include <vector> // 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. *
*************************************************************************/
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