arrfun2.cpp

// arrfun2.cpp -- functions with an array argument
#include <iostream>
const int ArSize = 8;
int sum_arr(int arr[], int n);

int main()
{
	int cookies[ArSize] = {1, 2, 4, 8, 16, 32, 64, 128};
	std::cout << cookies << " = array address";
	std::cout << sizeof(cookies) << " = sizeof cookies\n";
	int sum = sum_arr(cookies, ArSize);
	std::cout << "Total cookies eaten: " << sum << std::endl;
	sum = sum_arr(cookies, 3);
	std::cout << "First three eaters ate " << sum << " cookies.\n";
	sum = sum_arr(cookies + 4, 4); // only sum last 4 elements, and we can also assign &cookies[4]
	std::cout << "Last four eaters ate " << sum << " cookies.\n";
	return 0;
}

int sum_arr(int arr[], int n)
{
	int total = 0;
	std::cout << arr << " = arr, ";
	std::cout << sizeof(arr) << " = sizeof arr\n";
	for (int i = 0; i < n; i++) {
		total = total + arr[i];
	}
	return total;
}