fill.cpp

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#include <algorithm>   // for copy(), fill()
#include <iostream>    // for cout
#include <iterator>    // for ostream_iterator
#include <vector>      // for vector
 
#include <examples.h>
 
 
int main ()
{
    // Typedef for convenience.
    typedef std::vector<int, std::allocator<int> > Vector;
 
    const Vector::value_type arr[] = { 1, 2, 3, 4 };
 
    // Set up two vectors.
    Vector v1 (arr, arr + sizeof arr / sizeof *arr);
    Vector v2 (v1.begin (), v1.end ());
 
    // Set up one empty vector.
    Vector v3;
 
    // Fill all of v1 with 9.
    std::fill (v1.begin (), v1.end (), 9);
 
    // Fill first 3 of v2 with 7.
    std::fill_n (v2.begin (), 3, 7);
 
    // Use insert iterator to fill v3 with 5 11's.
    std::fill_n (std::back_inserter (v3), 5, 11);
 
    // Copy all three to cout.
    std::ostream_iterator<Vector::value_type,
                          char,
                          std::char_traits<char> > out (std::cout, " ");
 
    std::copy (v1.begin (), v1.end (), out);
    std::cout << std::endl;
 
    std::copy (v2.begin (), v2.end (), out);
    std::cout << std::endl;
 
    std::copy (v3.begin (), v3.end (), out);
    std::cout << std::endl;
 
    // Fill cout with 3 5's.
    std::fill_n (out, 3, 5);
    std::cout << std::endl;
 
    return 0;
}