use std::fill to populate vector with increasing numbers

Question

I would like to fill a vector using std::fill, but instead of one value, the vector should contain numbers in increasing order after.

Answer 1

If you really want to use std::fill and are confined to C++98 you can use something like the following,

#include 
#include 
#include 
#include 

struct increasing {
    increasing(int start) : x(start) {}
    operator int () const { return x++; }
    mutable int x;
};

int main(int argc, char* argv[])
{
    using namespace std;

    vector v(10);
    fill(v.begin(), v.end(), increasing(0));
    copy(v.begin(), v.end(), ostream_iterator(cout, " "));
    cout << endl;
    return 0;
}