vector last c 2b 2b

1vector<int> v;
2cout << v[v.size() - 1];
3cout << *(v.end() - 1);
4cout << *v.rbegin();
5// all three of them work

1// vector::back
2#include <iostream>
3#include <vector>
4
5int main ()
6{
7  std::vector<int> myvector;
8
9  myvector.push_back(10);
10
11  while (myvector.back() != 0)
12  {
13    myvector.push_back ( myvector.back() -1 );
14  }
15
16  std::cout << "myvector contains:";
17  for (unsigned i=0; i<myvector.size() ; i++)
18    std::cout << ' ' << myvector[i];
19  std::cout << '\n';
20
21  return 0;
22}

1std::v.back()