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68 lines
2.4 KiB
Plaintext
68 lines
2.4 KiB
Plaintext
The '''TIME$''' Function returns a [[STRING]] representation of the current computer time in a 24 hour format.
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{{PageSyntax}}
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:: PRINT "Present time = "; '''TIME$'''
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* Returns the present computer time in hh:mm:ss 24 hour format: "19:20:33"
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* Uses 2 colon (:) separators between hours, minutes and seconds
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* Hour values range from "00" to "23" starting from midnite.
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* Minutes and seconds range from "00" to "59"
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* Continuous TIME$ calls may lag if a QBasic program is minimized to the taskbar!
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''Example 1:'' A simple clock using [[DRAW]] with Turn Angle.
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{{CodeStart}} '' ''
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{{Cl|SCREEN}} 12
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{{Cl|DO}}
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{{Cl|CLS}}
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t$ = {{Cl|TIME$}}: h = {{Cl|VAL}}(t$): m = {{Cl|VAL}}({{Cl|MID$}}(t$, 4, 2)): s = {{Cl|VAL}}({{Cl|MID$}}(t$, 7, 2))
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{{Cl|PRINT}} t$
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{{Cl|CIRCLE}} {{Cl|STEP}}(0, 0), 200, 8
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{{Cl|DRAW}} "c12ta" + {{Cl|STR$}}((h {{Cl|MOD}} 12) * -30) + "nu133"
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{{Cl|DRAW}} "c14ta" + {{Cl|STR$}}(m * -6) + "nu200"
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{{Cl|DRAW}} "c9ta" + {{Cl|STR$}}(s * -6) + "nu200"
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{{Cl|_DISPLAY}}
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{{Cl|_LIMIT}} 1
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{{Cl|LOOP}} {{Cl|UNTIL}} {{Cl|INKEY$}} = {{Cl|CHR$}}(27) '' ''
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{{CodeEnd}}
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{{small|Code by Galleon}}
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: Explanation: Note that [[VAL]](TIME$) can just return the hour number 0 to 23 as the read stops at the first colon.
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''Example 2:'' The following Function converts TIME$ to normal 12 hour AM-PM digital clock format.
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{{CodeStart}} '' ''
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PRINT TIME$
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PRINT Clock$
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{{Cl|FUNCTION}} Clock$
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hour$ = {{Cl|LEFT$}}(TIME$, 2): H% = {{Cl|VAL}}(hour$)
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min$ = {{Cl|MID$}}(TIME$, 3, 3)
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IF H% >= 12 THEN ampm$ = " PM" ELSE ampm$ = " AM"
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IF H% > 12 THEN
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IF H% - 12 < 10 THEN hour$ = {{Cl|STR$}}(H% - 12) ELSE hour$ = {{Cl|LTRIM$}}({{Cl|STR$}}(H% - 12))
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ELSEIF H% = 0 THEN hour$ = "12" ' midnight hour
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ELSE : IF H% < 10 THEN hour$ = {{Cl|STR$}}(H%) ' eliminate leading zeros
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END IF
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Clock$ = hour$ + min$ + ampm$
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END FUNCTION '' ''
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{{CodeEnd}}
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{{OutputStart}}
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14:13:36
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2:13 PM
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{{OutputEnd}}
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:''Explanation:'' When hours are less than 10 (but not 0), {{KW|STR$}}(H%) alone keeps a space ahead of the hour. For 2 digit hours, {{KW|LTRIM$}} is used to remove that leading space. For the hours of 10 AM to 12 PM, the hour {{KW|STRING}} value is passed from {{KW|LEFT$}}(TIME$, 2) at the beginning of the function.
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''See also:''
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* [[TIME$ (statement)]], [[TIMER]]
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* [[DATE$]], [[DATE$ (statement)]]
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* [[VAL]], [[STR$]], [[HEX$]]
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* [[LTRIM$]], [[MID$]], [[LEFT$]]
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* [[IF...THEN]]
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{{PageNavigation}}
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