阅读程序,体会用法(3)

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问题及描述;

/* 02. *Copyright (c) 2016,烟台大学计算机学院 03. *All rights reserved. 04. *文件名称;test.cpp 05. *作者;邱凯 06. *完成日期;2016年6月8号 07. *版本号;v6.0 08. *问题描述;     阅读程序,体会用法(3) 09. *输入描述;    输入答案 10. *输出描述;    输出答案 11.*/  #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;}

运行结果;


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