Check out example codes for "c++ vector pop_back". It will help you in understanding the concepts better.

Code Example 1

#include <bits/stdc++.h> 
using namespace std;
int main(){
    vector<int> v1{10, 20, 30, 40, 50};
    
    //removing elemenets
    v1.pop_back();  //removes 50
    v1.pop_back();  //removes 40

}

Code Example 2

// 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; 
}

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