Common VC Data Types

Common VC data types (2006.11.26 ):

Description:
Char 1 8-128-127
Signed Char 1 8-128-127
Unsigned char 1 8 0-255
Short int 2 16-32768-32767
Signed short int 2 16-32768-32767
Unsigned short int 2 16 0 to 65535
Int 4 32-2147483648-2147483647
Signed int 4 32-2147483648-2147483647
Unsigned int 4 32 0-4294967259
Long int 4 32-2147483648-2147483647
Signed long int 4 32-2147483648-2147483647
Unsigned long int 4 32 0-4294967259
Long 4 32-2,147,483,648 to 2,147,483,647
Float 4 32 3.4e +/-38 (7 digits)
Double 8 64 1.7e +/-308 (15 digits)
Long double 10 80 1.2e +/-4932 (19 digits)
The following are definitions of common VC Data Types in windef. h:

Typedef unsigned long DWORD;
Typedef int bool;
Typedef unsigned char byte;
Typedef unsigned short word;
Typedef float;
Typedef float * pfloat;
Typedef bool near * pbool;
Typedef bool far * lpbool;
Typedef byte near * pbyte;
Typedef byte far * lpbyte;
Typedef int near * pint;
Typedef int far * lpint;
Typedef word near * pword;
Typedef word far * lpword;
Typedef long far * lplong;
Typedef DWORD near * pdword;
Typedef DWORD far * lpdword;
Typedef void far * lpvoid;
Typedef const void far * lpcvoid;
Typedef int;
Typedef unsigned int uint;
Typedef unsigned int * puint;
Typedef word atom;
1. Use sizeof () to get the number of bytes occupied by any object. For example, if there is a char type variable A, sizeof (a) will return 1.
2. You can also use typedef to define your own data types, such as typedef Myint unsigned Int. Then Myint is equivalent to unsigned Int.