Consortium in C Language

Many low-end development and network protocol stacks are used for network chip development.
 
 
A simple example
We have a 32-bit variable.
We may also need to use a's low 16-bit al
At this time, we can define a union to represent Al.
If 16 needs to be divided again, you can use the Union again in the Union.
 
 
Write an example.
 

  1  # Include  <  Stdio. h  >  
  2  
  3  Typedef Union
  4  {
  5  Unsigned  Int  Ax;
  6    Struct  Ax
  7  {
  8  Unsigned  Int  Al:  16  ;
  9  Unsigned  Int  AH:  16  ;
  10  } Sax;
  11  } Example;
 12  
  13    Int  Main (  Void  )
  14  {
  15  Example;
  16  A. Ax  =    0 xafafbebe  ;
  17  
  18     Int  I  =  A. Sax. Ah;
  19  Printf (  "  Ax = 0x % x, Ah = 0x % x, Al = 0x % x \ n "  , A. Ax, A. Sax. Ah, A. Sax. al );
  20  
  21     Return     0  ;
  22  }
  23  
  24