#include <iostream>
using namespace std;

void printArr(const int [], int );
void printOne(int &);

void main(){
	int arr[3] = {1,2,3};
	int size = 3;
	printArr(arr, size);
	cout << arr[2] << " " << size << endl;
	printOne(arr[1]);
	cout << arr[1] << endl;
}

void printOne(int &x){
	cout << x << endl;
	// modifies array element because pass by reference
	x = 7777;
}
void printArr(const int a[], int s){
	for(int i = 0; i < s; i++)
		cout << a[i] << endl;
	//a[2] = 7; prevented by const
	s = 42;
}