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jongwee
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Joined: 28 Jun 2006
Posts: 1388
Location: Singapore

Posted: Mon Mar 12, 2007 11:59 pm Post subject: Data Type & Values

Code:

Data type Bit Value range

Char 8 -128~127
Unsigned char 8 0~255
Signed char 8 -128~127
int 32 -2,147,483,648~2,147,483,647
Unsigned int 32 0~4,294,967,295
Signed int 32 -2,147,483,648~2,147,483,647
Short int 16 -32,768~32,767
Unsigned short int 16 0~65,535
Signed short int 16 -32,768~32,767
Long int 32 -2,147,483,648~2,147,483,647
Unsigned long int 32 0~4,294,967,295
Signed long int 32 -32,768~32,767
float 32 3.4E-38 ~ 3.4E+38
double 64 1.7E-308 ~ 1.7E+308
Long double 80 3.4E-4932 ~ 1.1E+4932
Bool None True/False
wchar_t 16 0~65,535

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flawedmatrix
Grandmaster Cheater

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Joined: 21 Jun 2006
Posts: 819
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Posted: Tue Mar 13, 2007 12:54 am Post subject:

Ima briefly go over these:

Code:

Char - it is basically a single character, or a single byte
Unsigned char - unsigned byte (0 to 255)
Signed char - signed byte (-128 to 127)

long int - long integers
Unsigned long int - unsigned long integers (0 to 4,294,967,295)
Signed long int - signed long integers (-2,147,483,648 to 2,147,483,647)

Short int - short integer
Unsigned short int - unsigned short integer (0 to 65,535)
Signed short int - signed short integer (-32,768 to 32,767)

int - integer
Unsigned int - unsigned integers (0 to 4,294,967,295)
Signed int - signed integers (-2,147,483,648 to 2,147,483,647)

float - a floating point number (Like decimal numbers) (3.4E-38 to 3.4E+38)
double - a double precision floating point number (More precise) ( 1.7E-308 to 1.7E+308)
Long double - a long double precision floating point number (3.4E-4932 to 1.1E+4932)

Bool - Boolean, which means a simple true or false
wchar_t - a wide character (0 to 65,535)

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Renkokuken
GO Moderator

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Joined: 22 Oct 2006
Posts: 3249

Posted: Tue Mar 13, 2007 1:09 am Post subject:

And for the Dephi...

Integer ordinals:

Code:

Boolean    Allows just True and False values
Byte    An integer type supporting values 0 to 255
Cardinal    The basic unsigned integer type
Comp    A 64 bit signed integer
Int64    A 64 bit sized integer - the largest in Delphi
Integer    The basic Integer type
LongInt    An Integer whose size is guaranteed to be 32 bits
LongWord    A 32 bit unsigned integer
ShortInt    An integer type supporting values -128 to 127
SmallInt    An Integer type supporting values from -32768 to 32767
Word    An integer type supporting values 0 to 65535

Floating point types:

Code:

Currency    A floating point type with 4 decimals used for financial values
Double    A floating point type supporting about 15 digits of precision
Extended    The floating point type with the highest capacity and precision
Real    A floating point type supporting about 15 digits of precision
Real48    The floating point type with the highest capacity and precision
Single    The smallest capacity and precision floating point type

String/Char types:

Code:

AnsiChar    A character type guaranteed to be 8 bits in size
AnsiString    A data type that holds a string of AnsiChars
Char    Variable type holding a single character
ShortString    Defines a string of up to 255 characters
String    A data type that holds a string of characters
WideChar    Variable type holding a single International character
WideString    A data type that holds a string of WideChars

Pointer types:

Code:

PAnsiChar    A pointer to an AnsiChar value
PAnsiString    Pointer to an AnsiString value
PChar    A pointer to an Char value
PCurrency    Pointer to a Currency value
PDateTime    Pointer to a TDateTime value
PExtended    Pointer to a Extended floating point value
PInt64    Pointer to an Int64 value
Pointer    Defines a general use Pointer to any memory based data
PShortString    A pointer to an ShortString value
PString    Pointer to a String value
PVariant    Pointer to a Variant value
PWideChar    Pointer to a WideChar
PWideString    Pointer to a WideString value

Other types:

Code:

Array    A data type holding indexable collections of data
Class    Starts the declaration of a type of object class
File    Defines a typed or untyped file
Record    A structured data type - holding fields of data
TConvFamily    Defines a family of measurement types as used by Convert
TConvType    Defines a measurement type as used by Convert
TDateTime    Data type holding a date and time value
Text    Defines a file as a text file
TextFile    Declares a file type for storing lines of text
TFloatFormat    Formats for use in floating point number display functions
TFormatSettings    A record for holding locale values for thread-safe functions
TObject    The base class type that is ancestor to all other classes
TPoint    Holds X and Y integer values
TRect    Holds rectangle coordinate values
TReplaceFlags    Defines options for the StringReplace routine
TSearchRec    Record used to hold data for FindFirst and FindNext
TSysCharSet    Characters used by supplied string parsing functions
TThreadFunc    Defines the function to be called by BeginThread
Variant    A variable type that can hold changing data types

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