how to get the last element of an array c++ code example

Example 1: find last element of an array c++

int arr={1,2,3,4,5,6};
int length=sizeof(arr)/sizeof(int);
int lastElement=aar[length-1];

Example 2: get the first element of array c++

int arr = [1,2,3,4];
cout << arr[0];			//printing the first element of the array arr

Example 3: How to get the last element of an array in C++ using std::array

#include <array>
std::array<int, 5> a {1, 2, 3, 4, 5};
int i = a[a.size() - 1]; // The last variable stored in i