Source of copy_n1a.cpp

Structures and functions

  1: //copy_n1a.cpp

  3: #include <iostream>
  4: #include <algorithm>
  5: #include <vector>
  6: #include <deque>
  7: #include <iterator>
  8: using namespace std;

 10: int main()
 11: {
 12:     cout << "\nThis program illustrates the use of the STL copy_n() "
 13:         "algorithm from\n<algorithm> to copy the first four "
 14:         "integers from a vector of ten integers\nto a deque "
 15:         "of five integers.";
 16:     cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');

 18:     int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
 19:     vector<int> v(begin(a), end(a));
 20:     deque<int> d(5, -1);
 21:     auto endOfCopiedRange =
 22:         copy_n(begin(v), 4, begin(d));
 23:     copy(begin(d), end(d), ostream_iterator<int>(cout, " "));
 24:     cout << "\nThe value at the end of the copied range is "
 25:         << *endOfCopiedRange << ".\n";
 26:     cout << "Press Enter to continue ... "; cin.ignore(80, '\n');
 27: }