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61 lines
2.3 KiB
Plaintext
61 lines
2.3 KiB
Plaintext
The '''RIGHT$''' function returns a set number of characters in a [[STRING]] variable starting from the end and counting backwards.
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{{PageSyntax}}
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:: '''RIGHT$('''''stringvalue$, numberofcharacters%''''')'''
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{{Parameters}}
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* The ''stringvalue$'' can be any string of [[ASCII]] characters as a [[STRING]] variable.
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* The ''numberofcharacters'' [[INTEGER]] value determines the number of characters to return from the right end of the string.
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{{PageDescription}}
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* If the number of characters exceeds the string length([[LEN]]) the entire string is returned.
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* RIGHT$ returns always start at the last character of the string, even if a space. [[RTRIM$]] can remove ending spaces.
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* '''Number of characters cannot be a negative value.'''
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''Example 1:'' Getting the right portion of a string value such as a person's last name.
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{{CodeStart}} '' ''
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name$ = "Tom Williams"
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Last$ = {{Cl|RIGHT$}}(name$, {{Cl|LEN}}(name$) - {{Cl|INSTR}}(name$, " ")) 'subtract space position from string length
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{{Cl|PRINT}} Last$ '' ''
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{{CodeEnd}}
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{{OutputStart}}Williams {{OutputEnd}}
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''Example 2:'' Adding the leading zero in single digit [[HEX$]] values using RIGHT to take the right two hexadecimal string digits.
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{{CodeStart}} '' ''
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{{Cl|SCREEN}} {{Cl|_NEWIMAGE}}(640, 480, 32) '32 bit screen modes ONLY!
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red = 255
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green = 0
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blue = 128
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Color32 red, green, blue
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{{Cl|PRINT}} "Colored text"
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{{Cl|SUB}} Color32 (R, G, B)
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R = R {{Cl|AND (boolean)|AND}} {{Cl|&H}}FF: G = G {{Cl|AND (boolean)|AND}} {{Cl|&H}}FF: B = B {{Cl|AND (boolean)|AND}} {{Cl|&H}}FF ' limit values to 0 to 255
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hexadecimal$ = "{{Cl|&H}}FF" + {{Cl|RIGHT$}}("0" + {{Cl|HEX$}}(R), 2) + {{Cl|RIGHT$}}("0" + {{Cl|HEX$}}(G), 2) + {{Cl|RIGHT$}}("0" + {{Cl|HEX$}}(B), 2)
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{{Cl|PRINT}} hexadecimal$
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{{Cl|COLOR}} {{Cl|VAL}}(hexadecimal$)
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{{Cl|END SUB}} '' ''
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{{CodeEnd}}
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{{OutputStart}}'''{{text|&HFFFF0080|white}}'''
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'''{{text|Colored text|#FF0080}}'''{{OutputEnd}}
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: ''Note:'' When a single hexadecimal digit is returned the resulting value will need the leading zero added. Otherwise the hexa- decimal value created will have a byte missing from the value. EX: Color &HFF000000 is valid while &HFF000 is not.
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''See also:''
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* [[LEFT$]], [[MID$]]
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* [[LTRIM$]], [[RTRIM$]]
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* [[INSTR]], [[HEX$]]
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{{PageNavigation}}
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