for_each

 1 //对序列中的每个元素执行某操作    for_each()
 2 /*template<class InputIterator, class Function>
 3   Function for_each(InputIterator first, InputIterator last, Function f)
 4   {
 5     for ( ; first!=last; ++first ) f(*first);
 6     return f;
 7   }*/
 8 #include<iostream>
 9 #include <vector>
10  using namespace std;
11  void fun(int i){
12 cout<<i<<"   ";
13 }  
14 
15 struct print{
16     void operator() (int x){cout<<x<<"   ";}
17 }object;
18   
19 
20 int main()
21 {
22     int a[10]={1,2,3,4,5,6,7,8,9,0};
23     vector<int> v(a,a+10);
24     for_each(v.begin(),v.end(),fun);
25     cout<<endl;
26     
27     vector<int>::iterator it;
28     for(it=v.begin();it!=v.end();it++)
29     cout<<*it<<"   ";
30     cout<<endl;
31     
32     for_each(v.begin(),v.end(),object);
33     cout<<endl;
34     
35     system("PAUSE");
36     return 0;
37 }