Character string
String text quantity:
What you have obtained is string
Alternative to the desired string
Dual quotation string
Escape sequence
Hexadecimal string
WYSIWYNG:
R "Multiple Wanwen Your Character"
Alternative to the desired string:
`Multiple Watch Your Character`
What you have come here:
character
Row
Double quotation marking string:
"Multiple Double Quotes"
Double quotes characters:
character
Escape sequence
Row
Side sequence:
/ '
/ "
/?
//
/ a
/ B
/ f
/ N
/ r
/ t
/ v
/ File end
/ x heel credit digital hexadecimal number
/ Octal number
/ Octal digital octal number
/ Octal digital octal digital eight reformed number
/ u heel credit digital hexadecimal number hexadecimal digital hexadecimal number
/ U heel credit digital hexadecimal digital hexadecimal digital hex digital hexadecimal number hex digital sixteen-binary number hexadecimal number
Hexadecimal string:
X "Multiple Sixteen British Characters"
Multiple hexadecimal string characters:
Hexadecimal number
blank
Row
Stringliteral:
Wysiwygstring
Alternatewysiwygstring
DoublequotedString
Escapesequence
HEXSTRING
Wysiwygstring:
R "wysiwygcharacters"
Alternatewysiwygstring:
`Wysiwygcharacters`
Wysiwygcharacter:
Character
Endofline
DoublequotedString:
Doublequotedcharacters
DoublequotedCharacter:
Character
Escapesequence
Endofline
Escapesequence:
/ '
/ "
/?
//
/ a
/ B
/ f
/ N
/ r
/ t
/ v
/ Endoffile
/ x hexdigit hexdigit
/ Octaldigit
/ Octaldigit Octaldigit
/ Octaldigit Octaldigit Octaldigit
/ u Hexdigit Hexdigit Hexdigit Hexdigit
/ U Hexdigit Hexdigit Hexdigit Hexdigit Hexdigit Hexdigit Hexdigit HEXDIGIT
HEXSTRING:
x "HexStringChars"
HEXStringChar
HEXDIGIT
WHITESPACE
Endofline
String text volume can be a dual quotation string, a newly obtained quotation marking string, a escape sequence, or a hex string.
The desired quotation string is surrounded by 'r "' and '"'. All characters located between 'R "' and '"' are part of the string, except for the end, and he is considered a '/ n' character. There is no escape sequence in R "":
R "Hello"
R "c: /root/foo.exe"
R "ab / n" // String consisting of four characters: 'a', 'b', '/', 'n'
Another form of what you have obtained is to use Director '`' instead of dual quotes. '`' Characters are not all on all keyboards, and sometimes it is difficult to distinguish between the other common characters' ''. Although '`' rarely uses, it will reflect its value when using a string containing '"'.
`hello`
`c: / root / foo.exe`
`ab / n` // String consisting of four characters: 'a', 'b', '/', 'N' Double Quotes String is a string surrounded by '" "'. A typical '/' marker can be embedded in the transfusion sequence.
The end is considered a '/ n' character.
"hello"
"c: //root/foo.exe"
"AB / N" // consists of three characters: 'a', 'b' and a new line
"ab
"// String consisting of three characters: 'a', 'b' and a new line
The escape string begins by '/', and he and its subsequent characters constitute a translucent character sequence. The adjacent escape character is connected together:
/ n // new line character
/ t // Table
/" // Double quotes
/ 012 // eight into
/ x1a // hex
/ u1234 // wchar character
/ U00101234 // dchar characters
/ R / N // Enter backhand
In addition to the above, other escape sequences are illegal.
Hexadecimal string uses hexadecimal data construct strings:
X "0A" // Equivalent to "/ x0a"
X "00 FBCD 32FD 0A" // Equivalent to "/ X00 / XFB / XCD / X32 / XFD / X0A"
Blank and new lines will be ignored, so it can be easily formatted. The number of hexadecimal characters must be a multiple of 2.
Adjacent strings should be used to connect, or can also be placed simply:
"Hello" ~ "world" ~ / n // constitutes a string: 'h', 'e', 'L', 'L', 'o', '', 'W', 'O', 'R' , 'l', 'd', string
The following form is equivalent:
"ab" "c"
R "ab" r "c"
R "a" "bc"
"a" ~ "b" ~ "c"
/ x61 "BC"
Character text
Character text:
'Single quotes characters'
Single quotes characters
character
Escape sequence
Characterliteral:
'SingleQuotedCharacter'
SinglequotedCharacter
Character
Escapesequence
Character text is a single character or a single-necked escape sequence, ''.
Integer number of characters
Integer text quantity:
Integer
Integer integer suffix
Integer:
Decimal
Binary number
Estimate
Hexadecimal number
Integer_
Integer suffix:
l
L
U
U
Lu
Lu
Lu
Lu
UL
UL
UL
UL
Decimal:
0
Non-zero
Non-zero digital decimal
Non-zero digital
Binary number:
0B binary number
0B binary number
Eight counts:
0 octave
Hexadecimal number:
0x hexadecimal number
0x hexadecimal number
IntegerLiteral:
Integer
Integer Integerseuffix
Integer:
Decimal
Binary
Octal
HEXADECIMAL
INTEGER _
IntegerseUffix:
l
L
U
U
Lu
Lu
Lu
Lu
UL
UL
UL
UL
Decimal:
0
Nonzerodigit
Nonzerodigit Decimal
Nonzerodigit_Decimal
Binary:
0b binarydigits
0b binarydigits
Octal:
0 Octaldigits
HEXADECIMAL:
0x HEXDIGITS
0x HEXDIGITS
Integers can adopt decimal, binary, octal or hexadecimal.
The decimal integer is a sequence of decimal numbers.
The binary integer is a sequence of binary numbers and prefixed with '0b'.
The octal integer is the sequence of octal numbers, prefixed with '0'.
The hexadecimal integer is a sequence of hexadecimal numbers, with '0x' prefix, or uses 'h' as a suffix.
Integers can embed '_' characters, they will be ignored. Embedded '_' can be used to format longer text volume, such as a thousand separator:
123_456 // 123456
1_2_3_4_5_6_ // 123456
After the integer, you can follow a 'L' or a 'u' or both.
The type of integer is determined by the following rules:
If it is decimal, it is ulong, long, and the first first found in INT can represent its type. If it is not a decimal, it is ulong, long, uint, and the first found in INT, which can be found before, can represent its type. If it has suffix 'u', it is ulong, and the first found in the UINT can represent its type. If it has suffix 'L', it is ulong, and the first found from the lastwes can represent its type. If it has suffix 'u' and 'L', it is a Ulong type.
Floating point number text
Floating point text quantity:
Floating point number
Floating point floating point numerical suffix
Floating point number false suffix
Floating point floating point number suffixes
Floating point:
Decoction floating point
Hexadecimal floating point
Floating point _
Floating point numerical suffix:
fly
Fly
l
L
Imaginary suffix:
i
I
FLOATLITERAL:
Float
Float floatsuffix
Float ImaginarySuffix
Float Floatsuffix ImaginarySuffix
Float:
Decimalfloat
HEXFLOAT
Float_
FLOATSUFFIX:
fly
Fly
l
L
ImaginarySuffix:
i
I
The floating point number can be used in decimal or hexadecimal format, just like standard C.
The hexadecimal floating point number starts with 0x, the scales begin with P or P, followed by the step of 2 as the bottom.
The floating point text can be embedded '_' characters, they will be ignored. Embedded '_' is used to format lengthy characters to improve readability, such as using them as a thousand separators:
123_456.567_8 // 123456.5678
1_2_3_4_5_6 _._ 5_6_7_8 // 123456.5678
1_2_3_4_5_6 _._ 5e-6_ // 123456.5e-6
Floating point can be followed by one
f,
F,
l or
L suffix.
forth
F suffix indicates that this is a floating point number,
l or
L Description This is an extension format floating point number.
If the floating point text is followed by I or I, then it is an IREAL (imaginary) type.
Example:
0x1.ffffffffffffffp1023 // double.max
0x1p-52 // Double.epsilon
1.175494351e-38f // float.min
6.3i // iDouble 6.3
6.3fi // ifloat 6.3
6.3li // IREAL 6.3
If the volume is exceeded by this type of representation, it will be considered an error. If the volume is fetched, you can use this type of valid bit number to indicate, it is not an error. The amount of the plurality is not a mark, but is constructed with real numbers and imaginary expressions in semantic analysis:
4.5 6.2i // complex
Keyword keyword is a retained flag:
Keyword:
Abstract
Alias
Align
ASM
Assert
Auto
Bit
Body
Break
Byte
Case
CAST
Catch
Cent
charr
Class
cfloat
CDOUBLE
CREAL
Const
Continue
Dchar
Debug
DEFAULT
Delegate
Delete
Deprecated
DO
Double
Else
ENUM
Export
Extern
False
Final
Finally
Float
for
Foreach
FUNCTION
goto
iDouble
IF
ifloat
Import
in
inout
int
Interface
Invariant
IREAL
IS
Long
Mixin
Module
New
NULL
OUT
Override
Package
Pragma
Private
protected
public
REAL
Return
Short
Static
Struct
Super
Switch
SYNCHRONIZED
Template
THIS
Throw
True
Try
Typedef
Typeof
Ubyte
ucent
Uint
Ulong
union
UnitTest
Ushort
Version
Void
Volatile
Wchar
While
WITH
Special marker sequence special marker sequence is processed by the lexical analysis program, which can appear between other marks and does not affect syntax analysis.
There is currently only one special marker sequence, # line.
Special marker sequence
# line integer row
# LINE integer FileSpec
Specified file
"Character"
SpecialTokensequence
# line integer Endofline
# line integer filespec endofline
FILESPEC
"Characters"
It sets the line number of the source code to
The value of the integer, set the source code file name to optional
FileSpec's value, take effect from the next line of the source text. The code file name and the line number are used to print debug information, and are also used by the symbol debugger to map the generated code back source.
E.g:
Int #Line 6 "Foo / Bar"
X; / / This is the 6th line of FOO / BAR
note,
The backslash in the FileSpec string will not be treated specially.
