第十五周阅读程序——3

/*
*Copyright (c) 2016,烟台大学计算机学院
*All rights reserved.
*文件名称 :
*作 者 : 徐聪
*完成日期 : 2016年6月21号
*版 本 号 : v6.0
*
*问题描述 :阅读程序
*输入描述 :
*程序输出 :
*/
#include <algorithm>
#include <functional>
#include <vector>
#include <iostream>
#include <numeric>
#include <iterator>
using namespace std;
int main()
{
int a[] = {1,4,7,2,5,8};
int b[] = {1,2,3,3,2,1};
const int ASZ = sizeof a / sizeof a[0];
const int BSZ = sizeof b / sizeof b[0];
ostream_iterator<int> out(cout,"  ");
copy(a, a + ASZ, out);
cout<<endl;
copy(b, b + BSZ, out);
cout<<endl;
int r = accumulate(a, a + ASZ, 0);
cout << "accumulate 1: " << r << endl;
// Should produce the same result:
r = accumulate(b, b + BSZ, 0, plus<int>());
cout << "accumulate 2: " << r << endl;
r = inner_product(a, a + ASZ, b, 0);
// 或  r = inner_product(a, a + ASZ, b, 0, plus<int>(), multiplies<int>());
cout << "inner_product : " << r << endl;
int* it = partial_sum(a, a + ASZ, b);
// 或 int* it = partial_sum(a, a + ASZ, b, plus<int>());
copy(b, it, out);
cout<<endl;
it = adjacent_difference(a, a + ASZ, b);
// 或 it = adjacent_difference(a, a + ASZ, b, minus<int>());
copy(b, it, out);
cout<<endl;
return 0;
}