cpp primer 习题 11.3

#include <vector>#include <algorithm>#include<iostream>#include <numeric>using namespace std;int main(){//inputvector<int> ivec;int i=0;cout<<"Plz input a number:"<<endl;while(cin>>i){ivec.push_back(i);}cin.clear();//calculationint sum=0;sum=accumulate(ivec.begin(),ivec.end(),0);//printcout<<"sum="<<sum<<endl;return 0;}