620_____________________________________________ 11

11.5 

11.5.1    

    ,   
   .       -
, , ,  ,    -
      .   
   ,     -
   .

, 

I = 5 * F(X);

  F   X,      5 
   I.

   ,     -
. :

F(X) ;

      .
   :

_   ( )
(

  
}

   ,    , 
   ,   .  -
    ,    .   
,    .     
   void.

     ,     -
 int.

  

    int      ,  
  .     , 
  main.        
 ,     .

 ,   ,    ( -
       ) 
    

_  
, :

double FSum(double XI,double X2, int A)

    FSum,    XI, X2  ,  
    double,    int.   -
  double.   XI, X2    , ..   
          , -
   .      
       .  
     11.5.2.