delphi数据类型及占用的字节数 C++ 对应数据类型

delphi、C++、C# 数据类型对应

byte:1个字节。

int/Integer:

long:

long long:8字节，64位

shortInt:2字节，16位

LongInt：4字节，32位

 Int64：8字节，64位

word:

float:4字节

double:8字节

 

http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Delphi_to_C%2B%2B_types_mapping

 

Delphi	C++	C#	字节Byte	位数Bit
double	double		8	32
single	float		4	16
integer	int		4	16
int64	long		8	32
short
word
Dword	Dword
ansichar	char	char			-128-127
byte	unsigned char				0~255
PByte array[0..254] of  Byte；	unsigned char* 或者 PBYTE	ref byte
PByteArray
TBytes;  TArray<Byte>	BYTE *	函数参数 ref byte byte[]
LongInt DWORD	unsigned long DWORD	uint
	DWORD &	ref uint
var int	int *	ref int
IntPtr	HANDLE	IntPtr
array [0 .. $40] of AnsiChar;		StringBuilder
SmallInt	short
PAnsiChar	char*
Word	unsigned int
	unsigned int*
	LPVOID
Word	unsigned short				0..65535
Pointer	VOID*
VARIANT	VARIANT System::Variant
var aData: OleVariant	VARIANT*	ref object
OleVariant	System::OleVariant
WideString	BSTR	string
TBytes		byte[]
TArray<Integer> 或  s:array[1..5] of integer 或 TIArr  = array of integer		int[]

 

http://www.cnblogs.com/del/archive/2007/12/03/981563.html

 

delphi与C#语法转换

C#功能

   byte[] CopyToBig(byte[] bBig, byte[] bSmall)
        {
            List<byte> lTemp = new List<byte>();
            lTemp.AddRange(bBig);
            lTemp.AddRange(bSmall);
            bBig = new byte[lTemp.Count];
            lTemp.CopyTo(bBig);
            return bBig;
        }

delphi实现

 var

aint:integer;

调用函数fun(int *);

fun(&aint);

 

var TagType:Word

  function fun1( x: Integer): Integer;

function fun(var x: Integer): Integer;

function fun2(const x: Integer): Integer;