working of for each loop in c++ code example

Example: for each loop in c++

#include <iostream> 
using namespace std
int main() 
{ 
    int arr[] = { 10, 20, 30, 40 }; 
  
    // Printing elements of an array using 
    // foreach loop 
    for (int x : arr) 
        cout << x << endl; 
}