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Forum Index : Microcontroller and PC projects : howto calc whit the %
| Author | Message | ||||
| tenij000 Senior Member  Joined: 30/05/2025 Location: NetherlandsPosts: 107 |
how do i calc whit the % most is working whit this program cls font 3 ' === Elementen === GUI TEXTBOX #1, 20, 20, 200, 30, RGB(0,0,0), RGB(255,255,255) ' Invoerveld GUI BUTTON #2, "Bereken", 20, 120, 80, 30, RGB(0,0,0), RGB(0,255,0) ' Knop GUI DISPLAYBOX #3, 20, 70, 200, 30, RGB(0,0,0), RGB(220,220,220) ' Resultaat ' === Hoofdlus === DO IF CtrlVal(#2) = 1 THEN expr$ = CtrlVal(#1) ON ERROR SKIP result = EVAL(expr$) CtrlVal(#3) = STR$(result) CtrlVal(#2) = 0 ENDIF PAUSE 50 LOOP |
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Martin H. Guru  Joined: 04/06/2022 Location: GermanyPosts: 1531 |
I would like to help, but unfortunately I don't understand your problem. Please, can you explain in more detail what the program is supposed to do and what you need as a percentage. How to calculate percentages: A percentage is a way to express a number as a part of 100. To calculate a percentage, use this formula: 👉 (Part ÷ Whole) × 100 = Percentage Example: If you got 18 points out of 20 on a test: (18 ÷ 20) × 100 = 90% So, you scored 90%. Edited 2025-08-07 20:01 by Martin H. 'no comment |
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| tenij000 Senior Member Joined: 30/05/2025 Location: NetherlandsPosts: 107 |
it is calc but cant calc % the + - * / all work |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 11815 |
% isn't a valid operator - see the manual. You have to do it by normal operators as per Martin's post |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 9107 |
There is no % maths function in MMBasic. The % symbol is used to denote an integer variable. If you want a percentage function you will need to write it. e.g. FUNCTION PC(percentage, number) PC = (percentage/number) * 100 END FUNCTION a = PC(18,20) This might be better than calculating percentages repeatedly in-line in some cases. Mick Zilog Inside! nascom.info for Nascom & Gemini |
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twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1769 |
Possibly the "Mod" operator is meant. Ragards Michael ‚My name is Ozymandias, king of kings Look on my works, ye Mighty, and despair!‘ Nothing beside remains. Round the decay Of that colossal wreck, boundless and bare The lone and ... |
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| Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1531 |
And the other way round, if you want to know how much x% of a number is part=(Whole/100)*Percentage @twofingers MODulo determines the remainder of a division e.g. 7 MOD 4 =3 Edited 2025-08-08 00:23 by Martin H. 'no comment |
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| twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1769 |
Hi Martin, That's exactly how it is! And in other programming languages, '%' is the modulo operator. Could it be that the OP knows languages other than MMBasic? I don't see that the OP asked about percentages. MMBasic Manual p24: * / \ MOD Multiplication, division, integer division and modulus (remainder) Regards Michael ‚My name is Ozymandias, king of kings Look on my works, ye Mighty, and despair!‘ Nothing beside remains. Round the decay Of that colossal wreck, boundless and bare The lone and ... |
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| Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1531 |
Hi Michael, of course you're right, I hadn't considered that Edited 2025-08-08 00:42 by Martin H. 'no comment |
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