vector pop back

// vector::pop_back
#include <iostream>
#include <vector>

int main ()
{
  std::vector<int> myvector;
  int sum (0);
  myvector.push_back (100);
  myvector.push_back (200);
  myvector.push_back (300);

  while (!myvector.empty())
  {
    sum+=myvector.back();
    myvector.pop_back();
  }

  std::cout << "The elements of myvector add up to " << sum << '\n';

  return 0;
}// CPP program to illustrate 
// pop_back() function 
#include <iostream> 
#include <vector> 
using namespace std; 
  
int main() 
{ 
    vector<int> myvector{ 1, 2, 3, 4, 5 }; 
    myvector.pop_back(); 
  
    // Vector becomes 1, 2, 3, 4 
  
    for (auto it = myvector.begin(); it != myvector.end(); ++it) 
        cout << ' ' << *it; 
} 
// CPP program to illustrate 
// push_back() function 
#include <iostream> 
#include <vector> 
using namespace std; 
  
int main() 
{ 
    vector<int> myvector{ 1, 2, 3, 4, 5 }; 
    myvector.push_back(6); 
  
    // Vector becomes 1, 2, 3, 4, 5, 6 
  
    for (auto it = myvector.begin(); it != myvector.end(); ++it) 
        cout << ' ' << *it; 
}