Asc
Returns the corresponding ASCII or Unicode integer representation of a character
Declare Function Asc Overload ( ByRef str As Const String, ByVal position As Integer = 1 ) As UInteger
Declare Function Asc ( ByVal str As Const ZString Ptr, ByVal position As Integer = 1 ) As UInteger
Declare Function Asc ( ByVal str As Const WString Ptr, ByVal position As Integer = 1 ) As UInteger
result = Asc( str [, position ] )
str
The ASCII or Unicode integer representation of the character at position in str.
If str is a String or a ZString, an ASCII code value is returned.
If str is a WString, a Unicode code value is returned.
The function returns zero (0) if the string is a zero length string, position is less than one (1), or position is greater than the number of characters in str.
Chr performs the opposite function for ASCII strings, while WChr is the opposite for Unicode strings, returning a string containing the character represented by the code passed as an argument.
will produce the output:
Unicode example (Note to documentation editors: don't put inside %%(qbasic) markers or the Russian text will disappear!)
Syntax
Declare Function Asc Overload ( ByRef str As Const String, ByVal position As Integer = 1 ) As UInteger
Declare Function Asc ( ByVal str As Const ZString Ptr, ByVal position As Integer = 1 ) As UInteger
Declare Function Asc ( ByVal str As Const WString Ptr, ByVal position As Integer = 1 ) As UInteger
Usage
result = Asc( str [, position ] )
Parameters
str
The source string.
positionThe position in the string of a character.
Return Value
The ASCII or Unicode integer representation of the character at position in str.
Description
If str is a String or a ZString, an ASCII code value is returned.
If str is a WString, a Unicode code value is returned.
The function returns zero (0) if the string is a zero length string, position is less than one (1), or position is greater than the number of characters in str.
Chr performs the opposite function for ASCII strings, while WChr is the opposite for Unicode strings, returning a string containing the character represented by the code passed as an argument.
Example
Print "the ascii code of 'a' is:"; Asc("a")
Print "the ascii code of 'b' is:"; Asc("abc", 2)
Print "the ascii code of 'b' is:"; Asc("abc", 2)
will produce the output:
the ascii code of 'a' is: 97 the ascii code of 'b' is: 98
Unicode example (Note to documentation editors: don't put inside %%(qbasic) markers or the Russian text will disappear!)
| dim a as wstring * 11 a = "Привет, мир" print "the Unicode of the second char of " & a & " is: " & asc(a) |
| the Unicode of the second char of Привет, мир is: 1088 |
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