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// Fig. 21.15: fig21_15.cpp
// Testing Standard Library vector class template
// element-manipulation functions.
#include <iostream>
using std::cout;
using std::endl;
#include <vector> // vector class-template definition
#include <algorithm> // copy algorithm
int main()
{
const int SIZE = 6;
int array[ SIZE ] = { 1, 2, 3, 4, 5, 6 };
std::vector< int > integers( array, array + SIZE );
std::ostream_iterator< int > output( cout, " " );
cout << "Vector integers contains: ";
std::copy( integers.begin(), integers.end(), output );
cout << "\nFirst element of integers: " << integers.front()
<< "\nLast element of integers: " << integers.back();
integers[ 0 ] = 7; // set first element to 7
integers.at( 2 ) = 10; // set element at position 2 to 10
// insert 22 as 2nd element
integers.insert( integers.begin() + 1, 22 );
cout << "\n\nContents of vector integers after changes: ";
std::copy( integers.begin(), integers.end(), output );
// access out-of-range element
try {
integers.at( 100 ) = 777;
} // end try
// catch out_of_range exception
catch ( std::out_of_range outOfRange ) {
cout << "\n\nException: " << outOfRange.what();
} // end catch
// erase first element
integers.erase( integers.begin() );
cout << "\n\nVector integers after erasing first element: ";
std::copy( integers.begin(), integers.end(), output );
// erase remaining elements
integers.erase( integers.begin(), integers.end() );
cout << "\nAfter erasing all elements, vector integers "
<< ( integers.empty() ? "is" : "is not" ) << " empty";
// insert elements from array
integers.insert( integers.begin(), array, array + SIZE );
cout << "\n\nContents of vector integers before clear: ";
std::copy( integers.begin(), integers.end(), output );
// empty integers; clear calls erase to empty a collection
integers.clear();
cout << "\nAfter clear, vector integers "
<< ( integers.empty() ? "is" : "is not" ) << " empty";
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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