'                                 ____ _______________223

 ,      b. iterate ()  
  b. ,    , 
  vect_iterator:

class vect_ifcerator {
public:

vect_iterator (vectSc) : p(&v), position(O) { }

int& iterate() const;

pivate:

vect *p;

int position;

};

     vect.    iterate.  
  vect    .
:

vect          (5), b(10) ;

vect_iterator it_a(a), it_b(b);

    ,    -
  .

4.    matrix_iterator   , 
      (.  7.10,  -
 ()  ,  . 208).    
  .

5.   my_string,    (.  6.4,
:  ,  . 162). - assing 
  ,   operators - concat 
 operator+.  ,   [ ] ,   
f-   my_string.    ,   -
 -1.

6.        (.  6.7,
:  ,  .169). - prepend ()
    operator+(), a del ( )   operator--().
 ,   () ,    - 
.

7.   set ()   20,  . 188,   
   +, -  *:

class set {

set operafcor+(set& v) ; // 
set operator*(set& v); // 
set operator-(set& v); // 

        :