Keyboard input/Obtain a Y or N response: Difference between revisions
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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 |
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. |
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=={{header|BASIC}}== |
=={{header|BASIC}}== |
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Revision as of 20:27, 9 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
<lang PureBasic>While Inkey():Wend ; Flush the buffer
PrintN("Press Y or N to continue") Repeat: Key$=UCase(Inkey()) Until Key$="Y" Or Key$="N" PrintN("The response was "+Key$)</lang>