To get the first and last element of an array in C++, you can use the indices 0 and size-1 respectively. Here is an example:
``c++
#include
using namespace std;
int main() {
int arr[] = {5, 6, 9, 2, 4, 10};
int size = sizeof(arr)/sizeof(arr[0]);
// Get the first element
int first = arr[0];
cout << "The first element is: " << first << endl;
// Get the last element
int last = arr[size-1];
cout << "The last element is: " << last << endl;
return 0;
}
Output:
The first element is: 5
The last element is: 10
`
In this example, we declare and initialize an integer array
arr with six elements. We then get the size of the array by dividing the total size of arr by the size of one element arr[0]. We obtain the first element of the array arr[0] and the last element of the array arr[size-1] and print them to the console using std::cout`.