Turn: VC word,dword,unsigned long,unsigned Short difference (turn)

typedef unsigned long DWORD;
typedef int BOOL;
typedef unsigned char BYTE;
typedef unsigned short WORD;
typedef float 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 INT;
typedef unsigned int UINT;
typedef unsigned int *puint;

The DWORD is actually unsigned long,uint is unsigned int.
A long in 16-bit Windows is 4 bytes, and int has only two bytes, and they are different;
32-bit Windows is 4 bytes, so the DWORD is the same as uint in Win32.

int is the number of digits of the standard computer 16-bit machine, 32-bit machine, and 64-bit machine respectively for 16,32,64
8-Bit Microcontroller word length 8bit, so int long is the software extension, for 32-bit win
int = 32
Long = 32
Short = 16

However, the number of bytes for long, short, and int is also related to the compiler

You can use sizeof in the VC to see its length, such as

sizeof (int) = 4, indicating 4 bytes, or 32 bits;

Because the standard does not specify the number of digits, many compilers and platforms are their own standards.
Anyhow sizeof (long) >= sizeof (int) >=sizeof (short)

Turn: VC word,dword,unsigned long,unsigned Short difference (turn)