Difference between revisions of "RIGHT$"

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The '''RIGHT$''' string function returns a part of a [[STRING]] value from the end.
The '''RIGHT$''' function returns a set number of characters in a [[STRING]] variable starting from the end and counting backwards.






''Syntax:'' RIGHT$(stringvalue$, characters%)
{{PageSyntax}}
:: '''RIGHT$('''''stringvalue$, numberofcharacters%''''')'''




{{PageParameters}}
* The ''stringvalue$'' can be any string of [[ASCII]] characters as a [[STRING]] variable.
* The ''numberofcharacters'' [[INTEGER]] value determines the number of characters to return from the right end of the string.


* The string value can be any string of ASCII characters as a string variable.
* The number of characters% should not exceed the length([[LEN]]) of the string.
* RIGHT$ return always starts at the last character of the string, even if a space.
* It counts backwards from the end of the string value.


{{PageDescription}}
* If the number of characters exceeds the string length([[LEN]]) the entire string is returned.
* RIGHT$ returns always start at the last character of the string, even if a space. [[RTRIM$]] can remove ending spaces.
* '''Number of characters cannot be a negative value.'''




''Example:''  
''Example 1:'' Getting the right portion of a string value such as a person's last name.
 
{{CodeStart}} '' ''
name$ = "Tom Williams"
name$ = "Tom Williams"


Last$ = RIGHT$(name$, 8)
Last$ = {{Cl|RIGHT$}}(name$, {{Cl|LEN}}(name$) - {{Cl|INSTR}}(name$, " ")) 'subtract space position from string length
 
PRINT Last$


{{Cl|PRINT}} Last$ '' ''
{{CodeEnd}}
{{OutputStart}}Williams {{OutputEnd}}


''Screen Returns:'' Williams


''Example 2:'' Adding the leading zero in single digit [[HEX$]] values using RIGHT to take the right two hexadecimal string digits.
{{CodeStart}} '' ''
{{Cl|SCREEN}} {{Cl|_NEWIMAGE}}(640, 480, 32) '32 bit screen modes ONLY!
red = 255
green = 0
blue = 128


Color32 red, green, blue
{{Cl|PRINT}} "Colored text"


''See also:'' [[LEFT$]], [[MID$]], [[LTRIM$]], [[RTRIM$]],
{{Cl|SUB}} Color32 (R, G, B)
R = R {{Cl|AND (boolean)|AND}} {{Cl|&H}}FF: G = G {{Cl|AND (boolean)|AND}} {{Cl|&H}}FF: B = B {{Cl|AND (boolean)|AND}} {{Cl|&H}}FF '   limit values to 0 to 255
hexadecimal$ = "{{Cl|&H}}FF" + {{Cl|RIGHT$}}("0" + {{Cl|HEX$}}(R), 2) + {{Cl|RIGHT$}}("0" + {{Cl|HEX$}}(G), 2) + {{Cl|RIGHT$}}("0" + {{Cl|HEX$}}(B), 2)
{{Cl|PRINT}} hexadecimal$
{{Cl|COLOR}} {{Cl|VAL}}(hexadecimal$)
{{Cl|END SUB}} '' ''
{{CodeEnd}}
{{OutputStart}}'''{{text|&HFFFF0080|white}}'''
'''{{text|Colored text|#FF0080}}'''{{OutputEnd}}
: ''Note:'' When a single hexadecimal digit is returned the resulting value will need the leading zero added. Otherwise the hexa- decimal value created will have a byte missing from the value. EX: Color &HFF000000 is valid while &HFF000 is not.




==Navigation:==
''See also:''
* [[LEFT$]], [[MID$]]
* [[LTRIM$]], [[RTRIM$]]
* [[INSTR]], [[HEX$]]


[[Keyword_Reference_-_Alphabetical|Go to Keyword Reference - Alphabetical]]


[[Keyword Reference - By usage|Go to Keyword Reference - By usage]]
{{PageNavigation}}

Latest revision as of 12:40, 17 February 2021

The RIGHT$ function returns a set number of characters in a STRING variable starting from the end and counting backwards.


Syntax

RIGHT$(stringvalue$, numberofcharacters%)


Parameters

  • The stringvalue$ can be any string of ASCII characters as a STRING variable.
  • The numberofcharacters INTEGER value determines the number of characters to return from the right end of the string.


Description

  • If the number of characters exceeds the string length(LEN) the entire string is returned.
  • RIGHT$ returns always start at the last character of the string, even if a space. RTRIM$ can remove ending spaces.
  • Number of characters cannot be a negative value.


Example 1: Getting the right portion of a string value such as a person's last name.

name$ = "Tom Williams" Last$ = RIGHT$(name$, LEN(name$) - INSTR(name$, " ")) 'subtract space position from string length PRINT Last$

Williams


Example 2: Adding the leading zero in single digit HEX$ values using RIGHT to take the right two hexadecimal string digits.

SCREEN _NEWIMAGE(640, 480, 32) '32 bit screen modes ONLY! red = 255 green = 0 blue = 128 Color32 red, green, blue PRINT "Colored text" SUB Color32 (R, G, B) R = R AND &HFF: G = G AND &HFF: B = B AND &HFF ' limit values to 0 to 255 hexadecimal$ = "&HFF" + RIGHT$("0" + HEX$(R), 2) + RIGHT$("0" + HEX$(G), 2) + RIGHT$("0" + HEX$(B), 2) PRINT hexadecimal$ COLOR VAL(hexadecimal$) END SUB

&HFFFF0080 Colored text

Note: When a single hexadecimal digit is returned the resulting value will need the leading zero added. Otherwise the hexa- decimal value created will have a byte missing from the value. EX: Color &HFF000000 is valid while &HFF000 is not.


See also:



Navigation:
Keyword Reference - Alphabetical
Keyword Reference - By Usage
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