vector pop

1#include <bits/stdc++.h> 
2using namespace std;
3int main(){
4    vector<int> v1{10, 20, 30, 40, 50};
5    
6    //removing elemenets
7    v1.pop_back();  //removes 50
8    v1.pop_back();  //removes 40
9
10}

1Removes the last element of the vector

1// vector::pop_back
2#include <iostream>
3#include <vector>
4
5int main ()
6{
7  std::vector<int> myvector;
8  int sum (0);
9  myvector.push_back (100);
10  myvector.push_back (200);
11  myvector.push_back (300);
12
13  while (!myvector.empty())
14  {
15    std::cout<<myvector.back()<<" ";
16    myvector.pop_back();
17  }
18
19  std::cout << "The elements of myvector add up to " << sum << '\n';
20
21  return 0;
22}

1The elements of myvector add up to 600
2