Problem with the function begin ()

[klite]

I'm experiencing the different functions offered by the STL :

 # include <iostream> 
 # include <vector>
 # include <algorithm>

 using namespace std;

 int main (void)
 (
     vector <int *> test;
     int a = 0;
     while (a <10)
     (
         test. push_back (& a);
         court <<test [a] <<endl;
         a + +;

     )
     cout <<test. begin () <<endl;

     return 0;
 )

I compile and get a error message on the line:: No match for 'operator <<'
Does someone can tell me where is my mistake? what's missing? Thank you in advance for your answers.

[Zecho]

C++ STL comes with a rich set of such components that aid in storing collection of values. To request an iterator appropriate for a particular STL templated class, you use the syntax :

std::class_name<template_parameters>::iterator name

[Walby]

iterators are a type (actually an object) in themselves. <int> vector:: iterator it declares an iterator on a vector of integer. This iterator is called "it".You should follow a tutorial that explains what the iterators, you'd understand.

In fact machin.begin () that you return an iterator to the first object, An iterator "reference" object. To access the object must be:

court <<* test. begin () <<endl;

[Aberto]

Vectors iterators are usually implemented as pointers. Passing over all the elements of a vector is simple, and is usually done using subscripts instead of an iterator. The type of iterator is different for each container. For example the type of iterator vector <int>, <char> vector, vector <string> ... are different.