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fill(3C++)			       -			    fill(3C++)

Standard C++ Library Copyright 1998, Rogue Wave Software, Inc.

NAME
       fill, fill_n

	- Initializes a range with a given value.

SYNOPSIS
#include <algorithm>
template <;class ForwardIterator, class T>
 void fill(ForwardIterator first, ForwardIterator last,
	   const T& value);

template <;class OutputIterator, class Size, class T>
 void fill_n(OutputIterator first, Size n, const T& value);

DESCRIPTION
       The  fill  and fill_n algorithms are used to assign a value to the ele‐
       ments in a sequence. fill assigns the value to all the elements	desig‐
       nated by iterators in the range [first, last).

       The  fill_n  algorithm assigns the value to all the elements designated
       by iterators in the range [first, first + n). fill_n assumes that there
       are  at	least  n  elements  following first, unless first is an insert
       iterator.

       Type T must be Assignable, and Size must be convertible to an  integral
       type.

COMPLEXITY
       fill makes exactly last - first assignments, and fill_n makes exactly n
       assignments.

EXAMPLE
//
// fill.cpp
//
 #include <algorithm>
 #include <vector>
 #include <iostream>
using namespace std;

int main()
 {
  int d1[4] = {1,2,3,4};
   //
   // Set up two vectors
   //
  vector<int> v1(d1,d1 + 4), v2(d1,d1 + 4);
   //
   // Set up one empty vector
   //
  vector<int> v3;
   //
   // Fill all of v1 with 9
   //
   fill(v1.begin(),v1.end(),9);

   //
   // Fill first 3 of v2 with 7
   //
   fill_n(v2.begin(),3,7);

   //
   // Use insert iterator to fill v3 with 5 11's
   //
   fill_n(back_inserter(v3),5,11);
   //
   // Copy all three to cout
   //
  ostream_iterator<int,char> out(cout," ");
  copy(v1.begin(),v1.end(),out);
  cout << endl;
  copy(v2.begin(),v2.end(),out);
  cout << endl;
  copy(v3.begin(),v3.end(),out);
  cout << endl;
   //
   // Fill cout with 3 5's
   //
   fill_n(ostream_iterator<int,char>(cout," "),3,5);
  cout << endl;

  return 0;
 }

Program Output

9 9 9 9
7 7 7 4
11 11 11 11 11
5 5 5

WARNINGS
       If your compiler does not support default template parameters, then you
       always  need  to	 supply the Allocator template argument. For instance,
       you have to write:

       vector<int,allocator<int> >

       instead of:

       vector<int>

       If your compiler does not support namespaces, then you do not need  the
       using declaration for std.

Rogue Wave Software		  02 Apr 1998			    fill(3C++)
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