C++ 输出流迭代器

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <iterator>
#include <cstdlib>
#include <ctime>
#include <functional>

using namespace std;

void display(vector<int>& v, const char* c);



int main() {

//  vector<string> v;
//  string s;
//
//  while (getline(cin, s))
//    v.push_back(s);
//
//  sort(v.begin(), v.end());
//  copy(v.begin(), v.end(), ostream_iterator<string>(cout, "\n"));
//
//
//  std::cout << "HI" << std::endl;

  srand(time(NULL));

  vector<int> v(10);
  for (int i = 0; i < 10; ++i)
    v[i] = rand() % 10000;

  display(v, " before ");
  sort(v.begin(), v.end());
  display(v, " after ");

  return 0;

}

void display(vector<int>& v, const char* c) {
  cout << c << endl;
  copy(v.begin(), v.end(), ostream_iterator<int>(cout, "\t"));
  cout << endl;
}