C++ program to demonstrate vector

#include <iostream>
#include <vector>
using namespace std;
void display(vector<int> &v)
{
for(int i=0;i<v.size();i++)
{
cout<<v[i];
}
cout<<"\n";
}
int main()
{
vector<int> v;
cout<<"Initial size="<<v.size()<<endl;
int x;
cout<<"Enter 5 integer values: ";
for(int i=0;i<5;i++)
{
cin>>x;
v.push_back(x);
}
cout<<"Size after adding 5 values: ";
cout<<v.size()<<endl;
cout<<"Current contents: ";
display(v);
v.push_back(6.6);
cout<<"size="<<v.size()<<endl;
cout<<"Contents now: ";
display(v);
vector<int>::iterator itr=v.begin();
itr=itr+3;
v.insert(itr,9);
cout<<"Content after inserting: "<<endl;
display(v);
v.erase(v.begin()+3,v.begin()+5);
cout<<"Content after deleting: "<<endl;
display(v);
cout<<"End\n";
return 0;
}