#include <iostream>
using namespace std;
int main() {
int arr[5] = {4, 1, 8, 2, 9};
int len = sizeof(arr)/sizeof(arr[0]);
cout << "The length of the array is: " << len;
return 0;
}int size = sizeof(arr)/sizeof(arr[0])// array::size
#include <iostream>
#include <array>
int main ()
{
std::array<int,5> myints;
std::cout << "size of myints: " << myints.size() << std::endl;
std::cout << "sizeof(myints): " << sizeof(myints) << std::endl;
return 0;
}// you can divide the size of an array
// by the size of each element (in bytes)
int len = sizeof(arr) / sizeof(arr[0]);