C++ 函数与数组

#include<iostream>
using namespace std;
const int ArSize = 8;
int sum_arr(int arr[], int n);
int main() {
    int cookies[ArSize]{ 1,2,4,8,16,32,64,128 };
    int sum = sum_arr(cookies, ArSize);
    cout << "Total cookies eaten:" << sum << "\n";
    return 0;
}
int sum_arr(int arr[], int n) {
    int total = 0;
    for (int i = 0; i < n; i++)
        total = total + arr[i];
    return total;
}