Array

#include<iostream>
#include<array>

using namespace std;
int main()
{

array<int,4> a={1,2,3,4};                                  //initializing the array
int size=a.size();
for(int i=0;i<size;i++)
{
cout<<a[i]<<endl;
}
cout<<"Element at 2nd Index-->"<<a.at(2)<<endl;             //print the element at index 2
cout<<"Empty or not-->"<<a.empty()<<endl;                   //tells whether an array is empty or not(0-false;1-true)
                                                                    
cout<<"First element-->"<<a.front()<<endl;                  //prints the first element of an array
cout<<"Last element-->"<<a.back()<<endl;                    //prints the last element of an array
}
  
------------------------OUTPUT----------------------
1
2
3
4
Element at 2nd Index-->3
Empty or not-->0
First element-->1
Last element-->4