C/C++ 内置类型的数值范围

Data   Type   Ranges  
  C/C++   recognizes   the   types   shown   in   the   table   below.  
   
  Type   Name   Bytes   Other   Names   Range   of   Values    
  int   *   signed,    
  signed   int   System   dependent    
  unsigned   int   *   unsigned   System   dependent    
  __int8   1   char,    
  signed   char   –128   to   127    
  __int16   2   short,    
  short   int,    
  signed   short   int   –32,768   to   32,767    
  __int32   4   signed,    
  signed   int   –2,147,483,648   to   2,147,483,647    
  __int64   8   none   –9,223,372,036,854,775,808   to   9,223,372,036,854,775,807    
  char   1   signed   char   –128   to   127    
  unsigned   char   1   none   0   to   255    
  short   2   short   int,    
  signed   short   int   –32,768   to   32,767    
  unsigned   short   2   unsigned   short   int   0   to   65,535    
  long   4   long   int,    
  signed   long   int   –2,147,483,648   to   2,147,483,647    
  unsigned   long   4   unsigned   long   int   0   to   4,294,967,295    
  enum   *   none   Same   as   int