第15周程序阅读2

#include <functional>#include <numeric>#include <vector>#include <iostream>using namespace std;int main(){    vector<int> v(5);    for (int i = 0; i < 5; i++)        v[i] = i + 1;    int sum = accumulate(v.begin(), v.end(), 0);    cout << "Sum of values == " << sum << endl;    int product = accumulate(v.begin(), v.end(), 1, multiplies<long>());    cout << "Product of values == " << product << endl;    return 0;}

运行结果：

程序分析：

计算1~5的和与积