std::fill

From Cppreference

Assigns the given value to the elements in the range [first, last).

[edit] Parameters

[edit] Return value

(none)

[edit] Complexity

Exactly last - first assignments.

[edit] Equivalent function

template< class ForwardIterator, class T >
void fill(ForwardIterator first, ForwardIterator last, const T& value)
{
    for (; first != last; ++first) {
        *first = value;
    }
}

[edit] Example

The following code uses fill() to set all of the elements of a vector of integers to -1:

#include <algorithm>
#include <vector>
#include <iostream>
 
int main()
{
    int data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }
    std::vector<int> v1(data, data+10);
 
    std::fill(v1.begin(), v1.end(), -1);
 
    for (vector<int>::iterator it = v1.begin(); it != v1.end(); ++it) {
        std::cout << *it << " ";
    }
    std::cout << "\n";
}

Output:

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1

[edit] See also