使用类属性算法accumulate和multiplies计算连乘积

使用类属性算法accumulate和multiplies计算连乘积示例如下：

#include <iostream>
#include <cassert>
#include <algorithm>
#include <list>
#include <iterator>  

using namespace std;

int main()
{
	int a[10]={12,3,25,7,11,213,7,123,29,-31};
	//int *ptr=find(&a[0],&a[10],7);
	//assert (*ptr==7 && *(ptr+1)==11);
	list<int> list1(&a[0],&a[10]);
	list<int>::iterator i=find(list1.begin(),list1.end(),7);
	assert (*i==7 && *(++i)==11);

	cout<<"Type some characters,including an 'x' followed\n"<<"by at least one nonwhite-space character: "<<flush;
	istream_iterator<char> in(cin);
	istream_iterator<char> eos;
	find(in,eos,'x');
	cout<<"The first nonwhite-space character following\n"<<"the first 'x' was '"<<*(++in)<<"'."<<endl;
	
	return 0;
}
dongjichao@dongjichao:~/c$ cat ex02-14.cpp
#include <iostream>
#include <vector>
#include <cassert>
#include <numeric>
#include <functional>
using namespace std;

int main()
{
	cout<<"Using generic accumulate algorithm to compute a product."<<endl;
	int x[5]={2,3,5,7,11};
	vector<int> vector1(&x[0],&x[5]);

	int product=accumulate(vector1.begin(),vector1.end(),1,multiplies<int>());
	assert (product==2310);
	cout<<" --- Ok."<<endl;
	return 0;
}