STL

Vector

1 用vector向量容器装入10个整数，然后，使用迭代器iterator和accumulate算法统计

出这10个元素的和

    
    
    
    

     
     
     
     
#include "stdafx.h"
     
     
     
     
#include "vector"
     
     
     
     
#include "iostream"
     
     
     
     
#include "numeric" //accumulate need it
     
     
     
     
using namespace std;
     
     
     
     
 
     
     
     
     
 
     
     
     
     
int _tmain(int argc, _TCHAR* argv[])
     
     
     
     
{
     
     
     
     
 vector<int> vint;
     
     
     
     
 //初始化vector
     
     
     
     
 for (int i=0; i<10; i++)
     
     
     
     
 {
     
     
     
     
 vint.push_back(i);
     
     
     
     
 }
     
     
     
     
 //使用迭代器
     
     
     
     
 vector<int>::iterator iter;
     
     
     
     
 for (iter = vint.begin(); iter != vint.end(); iter++)
     
     
     
     
 {
     
     
     
     
 cout << *iter << " "; //need * before iter
     
     
     
     
 }
     
     
     
     
 cout << endl;
     
     
     
     
 int sum = accumulate(vint.begin(), vint.end(), 0);
     
     
     
     
 cout << "sum=" << sum << endl;
     
     
     
     
 return 0;
     
     
     
     
}
    
    
    
    

来自为知笔记(Wiz)