Vector Code [Continuation]

#include<bits/stdc++.h>

using namespace std;
int main(){

    vector<int> v;

    v.push_back(35);
    v.push_back(45);
    v.push_back(55); // 35,45,55

    v.insert(v.begin(),30); //30,35,45,55

    v.insert(v.begin()+2, 40);

    for(int i =0; i<v.size(); i++){
        cout<<v[i]<<" ";
    }
    cout<<endl;
    //30,35,40,45,55

    v.erase(v.begin()+2);

    for(int i =0; i<v.size(); i++){
        cout<<v[i]<<" ";
    }
    cout<<endl;

    // 30, 35,45,55

    v.erase(v.begin(),v.begin()+2);

    for(int i =0; i<v.size(); i++){
        cout<<v[i]<<" ";
    }
    cout<<endl;

    //45,55
    //v.end() gives the address of last element + 1

    v.erase(v.begin(),v.end());

    cout<<"size of vector is now = "<<v.size()<<endl;

    cout<<"----------First part of the lec is done---------"<<endl;

    vector<int> vec;

    vec.push_back(7);
    vec.push_back(3);
    vec.push_back(8);
    vec.push_back(1); // 7,3,8,1
    for(int i = 0;i<vec.size();i++){
        cout<<vec[i]<<" ";
    }
    cout<<endl;

    sort(vec.begin(),vec.end());

    cout<<"After sorting : "<<endl;
    for(int i = 0;i<vec.size();i++){
        cout<<vec[i]<<" ";
    }
    cout<<endl;



}