C++之vector类型的形参

推荐的做法是使用迭代器当做形参

#include <iostream>
#include <new>
#include <bitset>
#include <string>
#include <stdexcept>
#include <vector>


using  namespace std;


void  print(vector<double>::iterator iter_begin,vector<double>::iterator iter_end)
{
    while(iter_begin!=iter_end)
    {
        cout<<*iter_begin<<endl;
        *iter_begin++;
    }
}

double print_sum(vector<double>::iterator iter_begin,vector<double>::iterator iter_end)
{
    double sum=0.0;
    while(iter_begin!=iter_end)
    {
        sum+=*iter_begin;
        *iter_begin++;
    }
    return sum;
}

int main()
{
    vector<double> v;
    cout<<"请输入数据："<<endl;
    double val;
    while(cin>>val)
    {
        v.push_back(val);
    }
    cout<<"输入的数据为："<<endl;
    print(v.begin(),v.end());
    cout<<"向量的和为："<<endl;
    double sum=print_sum(v.begin(),v.end());
    cout<<sum<<endl;
    return 0;
    //预处理进行调试
    #ifdef NDEBUG
    cout<<""<<endl;
    #endif // NDEBUG
}