back_inserter in vector c++
// back_inserter example
#include <iostream> // std::cout
#include <iterator> // std::back_inserter
#include <vector> // std::vector
#include <algorithm> // std::copy
int main () {
std::vector<int> foo,bar;
for (int i=1; i<=5; i++)
{ foo.push_back(i); bar.push_back(i*10); }
std::copy (bar.begin(),bar.end(),back_inserter(foo));
std::cout << "foo contains:";
for ( std::vector<int>::iterator it = foo.begin(); it!= foo.end(); ++it )
std::cout << ' ' << *it;
std::cout << '\n';
return 0;
}