C++ Vector clear()

v.clear();

#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<int>  v{1,2,3,4,5};
cout<<"Elements of v vector are :";
for(int i=0;i<v.size();i++)
cout<<v[i]<<" ";
v.clear();
for(int i=0;i<v.size();i++)
cout<<v[i];
    return 0;
}

Elements of v vector are :1 2 3 4 5