    C++__________________________________717

 

          .
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    .      -
  .

      union   
,     (.  12.11.1  12.13). :

union Tunion {

int    i;

double d;

char * s;

1;

       Tunion,   
         i,   
d,     s.

       ,   .  -
        ,
:

Tunion N;

        ,  
   . ,    :

N. i = 5;

N.d = 5.1;

char *S = "";

N . s = S ;

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         .
, ,       ,  
   d,     .    
       s,     ,
 ,     s.

 ' ''~" ""

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12.13 

12.13.1  

    ,  . ,   C+-l-Builder
       -
    C+4-Builder   C++.  ,
 (.  12.11)   (.  12.12)  C++ 
   .   ,      , -
     .