generate

#include <iostream>
#include <algorithm>
#include <vector>
#include <cstdlib>
 
using namespace std;
 
int main()
{
  vector<int> v(10);
  cout <<"\nHere are the initial contents of v:\n";
  for (vector<int>::size_type i=0; i<v.size(); i++)
    cout <<v.at(i)<<" ";

  cout <<"\nNow we fill v with randomly generated integer values.";
  generate(v.begin(), v.end(), rand);
  cout <<"\nHere are the revised contents of v:\n";
  for (vector<int>::size_type i=0; i<v.size(); i++)
    cout <<v.at(i)<<" ";
 
  cout <<"\nFinally, we fill the last half of v with new randomly generated integer values.";
  generate(v.begin()+5, v.end(), rand);
  cout <<"\nHere are the revised contents of v:\n";
  for (vector<int>::size_type i=0; i<v.size(); i++)
    cout <<v.at(i)<<" ";
 
  return 0;
}