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2016-06-09 08:26 344 查看
/*
*Copyright(c)2016,LynseyListening
*All rights reserced.
*文件名称:listening.cpp
*作者    :陈旭
*完成日期:2016.6.9
*版本号  :codeblocks 16.01
*/

#include <iostream>
#include <vector>

#include <algorithm>
#include <functional>

using namespace std;
void Show(double);
int main()
{
double arr1[5] = {2, 4, 8, 10, 16};
double arr2[5] = {1, 3, 5, 7, 9};
cout.setf(ios_base::fixed);
cout.precision(1);
cout << "arr1:\t";
for_each(arr1, arr1 + 5, Show);// (1)
cout << endl;
cout << "arr2: \t";
for_each(arr2, arr2 + 5, Show);// (2)
cout << endl;

vector<double> sum(5);// (3)
transform(arr1, arr1 + 5, arr2, sum.begin(),plus<double>());// (4)
cout << "sum:\t";

for_each(sum.begin(), sum.end(), Show);// (5)
cout << endl;
vector<double> prod(5);// (6)
transform(arr1, arr1 + 5, prod.begin(),
bind1st(multiplies<double>(), 2.5));// (7)
cout << "prod:\t";
for_each(prod.begin(), prod.end(), Show);// (8)
cout << endl;
return 0;
}
void Show(double v)
{
cout.width(6);
cout << v << ' ';
}


运行结果:

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