Manipulating input
BlitzMax Forums/BlitzMax Beginners Area/Manipulating input
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| I have a program that is supposed to manipulate user input ( numbers) and then calculates values. Problem is I get an error "unable to create string to int". Any advice? |
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| It would be helpful to have the line of code which throws the error. Most likely the issue is your attempting to add strings with an integer variable. |
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The only thing is I don't know how input can be manipulated (like numbers are for calculating)
AppTitle="Architecture->Digging a hold by Me"
Type TheOnlyType
Field width':Int
Field length':Int
Field depth':Int
EndType
Repeat
Print "Created by Me. Cannot reproduce/sell/distribute in any form without consent"
Delay 1200
Print "This super easy program calculates everything about digging a hold"
Delay 1000
Print "Just type in the values. It's that easy!"
width=Input("What is the width of the hole? ")
Delay 700
length=Input("What is the height of the hole? ")
Delay 700
depth=Input("What is the depth of the hole? ")
Delay 700
Print "Calculating...hold on a sec...."
Delay 1000
Print "Cubic feet of dirt to dig: " + (width%+4)(length%+4)(depth%) + " ft"
Delay 500
Print "Cubic yards of dirt to dig: " + (width+4%*length%+4*depth%)/2 + " yds"
Delay 500
Print "Cost to dig the hole: $" + ((width%)(length%)(depth$)) * 6
Delay 500
Print "Amount of backfill: " + ((width% + width% + length% + length%) * depth%)/27 *2 + " cubic yards"
Delay 500
Print "How much dirt you have to hall away: " + ((width%+4)(length%+4)(depth%)) - (((width% + width% + length% + length%) * depth%)/27 *2)
Delay 500
Print "How much $$$ halling the dirt away costs: $" + (((width%+4)(length%+4)(depth%)) - (((width% + width% + length% + length%) * depth%)/27 *2))*50
Delay 500
Print "Total cost is: $" + ((((width%+4)(length%+4)(depth%)) - (((width% + width% + length% + length%) * depth%)/27 *2))*50) + (((width%)(length%)(depth$)) * 6)
Until KeyHit(27)
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| One or two issues here :-) May I suggest you start your BlitzMax adventure by using either Strict or SuperStrict at the top of your .bmx file ... a bit like this : Strict ' .. the rest of your program These two modes help the compiler to better understand what you are trying to do, and will give you more useful error messages. Next. Your "width" value, you have declared inside a Type. But, you try to use it as a normal variable. Either, you don't want to use a Type, or you need to change how you use "width". If you want to use TheOnlyType, then you'll need to create a new object : Local dimensions:TheOnlyType = New TheOnlyType after which you would refer to its fields with : dimensions.width = ..... If you don't want to use the type, you can define "width" like : Local width:int To get a value from Input(), you will need to convert the result it to a number. You have two ways to do this, but the easiest is to do this:
width = Int(Input("blah...."))
which converts the String to an Int. This way is called casting. |
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| Oh ok, thanks. This will prolly' fix my problem! |
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| Maybe not..... Error Expression of type 'Int' cannot be invoked
Strict
AppTitle="Architecture->Digging a hold by ZaChO"
Global width:Int
Global length:Int
Global depth:Int
Repeat
Print "Created by ZaChO. Cannot reproduce/sell/distribute in any form without consent"
Delay 1200
Print "This super easy program calculates everything about digging a hold"
Delay 1000
Print "Just type in the values. It's that easy!"
width = Int(Input("What is the width of the hole? "))
Delay 700
length=Int(Input("What is the height of the hole? "))
Delay 700
depth=Int(Input("What is the depth of the hole? "))
Delay 700
Print "Calculating...hold on a sec...."
Delay 1000
Print "Cubic feet of dirt to dig: " + (width+4)(length+4)(depth) + " ft"
Delay 500
Print "Cubic yards of dirt to dig: " + (width+4*length+4*depth)/2 + " yds"
Delay 500
Print "Cost to dig the hole: $" + ((width)(length)(depth)) * 6
Delay 500
Print "Amount of backfill: " + ((width + width + length + length) * depth)/27 *2 + " cubic yards"
Delay 500
Print "How much dirt you have to hall away: " + ((width+4)(length+4)(depth)) - (((width + width + length + length) * depth)/27 *2)
Delay 500
Print "How much $$$ halling the dirt away costs: $" + (((width+4)(length+4)(depth)) - (((width + width + length + length) * depth)/27 *2))*50
Delay 500
Print "Total cost is: $" + ((((width+4)(length+4)(depth)) - (((width + width + length + length) * depth)/27 *2))*50) + (((width)(length)(depth)) * 6)
Until KeyHit(27)
I really thought Blitmax could manipulate input that had a numeracle value, guess not... |
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the compiler doesn't know what you are trying to do here:(width+4)(length+4)(depth) or here: ((width)(length)(depth)) the only way the compiler know it's a multiplication is with an asterisk "*". It doesn't know what to do with two sets of parenthesis unless you specify. |
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| Oh, but does the compiler recognize width+4? |
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| yes, but do you know the order of operations? this: (width+4)(length+4)(depth) is not the same as this: (width+4*length+4*depth) anyway I thought area was: width * length * depth why are you adding 4? |
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| you need two extra feet on each side to work on the exterior wall. when you are building a house |
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this:Print "Cubic feet of dirt to dig: " + (width+4)(length+4)(depth) + " ft" needs to be this: Print "Cubic feet of dirt to dig: " + (width+4 * length+4 * depth) + " ft" as well as in all the other print commands |
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| "digging a hold" -> "digging a hole", I presume? |
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| @B-Ya, I just caught that before I read your post. My program works fine except for a few math bugs. @xlsior-didnt even see that before you mentioned it. lol |
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