Keyboard input/Obtain a Y or N response: Difference between revisions
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=={{header|PureBasic}}== |
=={{header|PureBasic}}== |
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Inkey() returns the character string of the key which is being pressed at the time. |
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<lang PureBasic>While Inkey():Wend ; Flush the buffer |
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Repeat |
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; Get the key being pressed, or a empty string. |
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Key$=UCase(Inkey()) |
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; |
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; To Reduce the problems with an active loop |
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; a Delay(1) will release the CPU for the rest |
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; of this quanta if no key where pressed. |
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Delay(1) |
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Until Key$="Y" Or Key$="N" |
Until Key$="Y" Or Key$="N" |
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PrintN("The response was "+Key$)</lang> |
PrintN("The response was "+Key$)</lang> |
Revision as of 05:31, 10 October 2010
Keyboard input/Obtain a Y or N response is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.
Obtain a valid Y or N response from the keyboard. The keyboard should be flushed, so that any outstanding keypresses are removed, preventing any exiting Y or N keypress from being evaluated. The response should be obtained as soon as Y or N are pressed, and there should be no need to press an enter key.
BASIC
ZX Spectrum Basic
10 IF INKEY$<>"" THEN GOTO 10 20 PRINT "Press Y or N to continue" 30 LET k$ = INKEY$ 40 IF k$ = "y" OR k$ = "Y" OR k$ = "n" OR k$ = "N" THEN GOTO 60 50 GOTO 30 60 PRINT "The response was "; k$
PureBasic
Inkey() returns the character string of the key which is being pressed at the time. <lang PureBasic>PrintN("Press Y or N to continue")
Repeat
; Get the key being pressed, or a empty string. Key$=UCase(Inkey()) ; ; To Reduce the problems with an active loop ; a Delay(1) will release the CPU for the rest ; of this quanta if no key where pressed. Delay(1)
Until Key$="Y" Or Key$="N" PrintN("The response was "+Key$)</lang>