[Help] Calculator

[#Just_Me]

hello guys,

How to multiplying two numbers within a single text. ?

for example: 5 * 5 = 25

like in one Edit only, and then i get the results by pressing Get Results

and the equation Solved ?

help please

Edited January 17, 2017 by #Just_Me

[IIYAMA]

-- client side --
addCommandHandler ("multiply",
function (commandName, number1, number2)
    number1 = tonumber(number1)
    number2 = tonumber(number2)
    if number1 and number2 then
      	local result = number1 * number2
    	outputChatBox(result)
    end
end)

/multiply 5 5

CLIENTSIDE

Quote

and then i get the results by pressing Get Results

?????

Edited January 17, 2017 by IIYAMA

[#Just_Me]

yes thanks ..

your way i already know it but .. what i need is

to do it in Edit .. like i'm typing 5 * 5

in the edit and there is a button to get the results of this equation i entered

but thanks .. this function helped me .. string.match

[IIYAMA]

local theMath = "5 * 5"
local calculate = loadstring("outputChatBox(" .. theMath .. ")")
calculate();

Without complex string manipulation. Yet it can contain all kinds of calculations, but you have to be careful because it can contain more than ONLY math. Security risks!

Is it for public or only personal use?

Edited January 17, 2017 by IIYAMA

[Mr.Loki]

You can also do this with the runcode resource.

/crun 5 * 5

executed command: 5 * 5
Command results: 25 [number]

[#Just_Me]

IIYAMA

 

no it's for public .. yes it's more than math

i know that ... it can run codes and a lot of stuff .. it needs some changes in it

to be good to use .. thank you

[IIYAMA]

Here you have an example how to filter with specific characters: http://stackoverflow.com/questions/27321103/limitting-character-input-to-specific-characters

If players can't use letters, most of the danger has been solved. No letters = no functions.

[#Just_Me]

that's a good idea

but i have this way:

string.gsub ("letter45", "%D", "")
-- result: 45

 

it returns the numbers only but if i entered one of these methods: (+ - * /)

it removes them too ..

 

so .. i made this function .. i think it's good now to use it like this way ..

function filterMath (text)
    local result = string.gsub (text, "[A-Za-z-[%]-{%}%'<>?:;!@#$^&()=]", "")
    local equation = loadstring ("return " .. result)
    if (equation) then
        return equation ()
    else
        return "No Results"
    end
end

 

Edited January 19, 2017 by #Just_Me

[IIYAMA]

nice!

[#Just_Me]

Thank you for your help.

[IIYAMA]

np.