c++ how to get last element of vector code example

Example 1: access last element in vector in c++

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

Example 2: c++ vector.back

#include <iostream>
#include <vector>

int main()
{
  std::vector<int> myvector;
  
  //add 2 to the back
  myvector.push_back(2);
  
  std::cout << myvector.back() << std::endl; //this will print 2
  
  myvector.push_back(46);
  std::cout << myvector.back() << std::endl; //prints 46
  
  return 0;
  
}

/*Output
2
46
*/

Example 3: c++ get last element in vector

std::v.back()