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48 lines
2 KiB
Plaintext
48 lines
2 KiB
Plaintext
The [[MKI$]] function encodes an [[INTEGER]] numerical value into a 2-byte [[ASCII]] [[STRING]] value.
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{{PageSyntax}}
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: {{Parameter|result$}} = [[MKI$]]({{Parameter|integerVariableOrLiteral%}})
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{{PageDescription}}
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* {{Parameter|integerVariableOrLiteral%}} is converted to two ASCII characters.
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* [[INTEGER]] values can range from -32768 to 32767.
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* MKI$ string values can be converted back to numerical INTEGER values using [[CVI]].
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* The function takes up less byte space in a file than using the text numerical value when the value is over 2 digits.
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* When a variable value is used with [[PUT]] a numerical value is converted automatically in [[RANDOM]] and [[BINARY]] files.
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{{PageExamples}}
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''Example:'' How MKI$ creates a two byte string integer value to save file space.
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{{CodeStart}} '' ''
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{{Cl|SCREEN (statement)|SCREEN}} 12 '_PRINTSTRING requires a graphic screen mode
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DO
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{{Cl|COLOR}} 14: {{Cl|LOCATE}} 13, 20: {{Cl|INPUT}} "Enter an Integer from 1 to 32767(0 quits): ", number%
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{{Cl|IF...THEN|IF}} number% < 1 {{Cl|THEN}} {{Cl|EXIT DO}}
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{{Cl|CLS}}
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A$ = {{Cl|CHR$}}(number% {{Cl|MOD}} 256) 'first digit(0 to 255)
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B$ = {{Cl|CHR$}}(number% \ 256) 'second digit(0 to 127)
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MKIvalue$ = A$ + B$
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Q$ = {{Cl|CHR$}}(34)
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strng$ = "{{Cl|CHR$}}(" + {{Cl|LTRIM$}}({{Cl|STR$}}(number% {{Cl|MOD}} 256)) + ") + {{Cl|CHR$}}(" + {{Cl|LTRIM$}}({{Cl|STR$}}(number% \ 256)) + ")"
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{{Cl|COLOR}} 11
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{{Cl|_PRINTSTRING}} (222, 252), {{Cl|STR$}}(number%) + " = " + strng$
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{{Cl|_PRINTSTRING}} (252, 300), "{{Cl|MKI$}} value = " + Q$ + MKIvalue$ + Q$ 'print ASCII characters
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{{Cl|LOOP}}
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{{Cl|END}} '' ''
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{{CodeEnd}}
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{{small|Code by Ted Weissgerber}}
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:''Explanation:'' INPUT in QB64 limits integer entries to 32767 maximum. MOD 256 finds the part of a value from 0 to 255 while the second value is the number of times that 256 can go into the value. [[_PRINTSTRING]] can print all of the [[ASCII]] characters.
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{{PageSeeAlso}}
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* [[MKD$]], [[MKS$]], [[MKL$]]
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* [[CVD]], [[CVI]], [[CVS]], [[CVL]]
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* [[_MK$]], [[_CV]]
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{{PageNavigation}}
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<
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