使用类属性算法accumulate和multiplies计算连乘积

#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;
}