函数和Vector相关基本操作

#include <iostream>
#include <vector>
using namespace std;

double vectorSum(vector<double>::iterator begin,
vector<double>::iterator end)
{
double sum=0.0;
while(begin!=end){
sum+=*begin++;
}
return sum;
}

int main()
{
vector<double> dvec;
//读入vector元素
cout<<"Enter double type elements for vector:(Ctrl+Z to end)"<<endl;
double dval;
while(cin>>dval){
dvec.push_back(dval);//输入数据读入内存入栈
}
//求dvec所含元素之和
cout<<"Summation of elements: "
<<vectorSum(dvec.begin(),dvec.end())<<endl;
return 0;
}