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How can I calculate a stringed math problem?
calculation = "1+1" print(calculation) --output: 1+1
How do I unstringify this in Roblox Lua? I don't want to use loadstring due to security issues nor does math.eval work...
What are my options to make this work?
I've tried to format it like this but it doesn't work, it outputs nil:
--I used string.byte to get the values of 1 and + and then I did this: print(tonumber(string.char(49)) .. string.char(43)) .. tonumber(string.char(49))) --I want to calculate it in a print but it doesn't work.
The characters + and -, are they strings or numbers???
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Use :sub() OnaKat 444 — 4y
2 answers
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I have made a new script to calculate it.
local calculate = "3+31"
print(calculate)
print()
local num1 = nil
local numA = nil
local symbol = nil
local num2 = nil
for i = 1,100,1 do
local sub = calculate:sub(1,i)
if tonumber(sub) ~= nil then
num1 = sub
numA = i
end
end
symbol = calculate:sub(numA+1,numA+1)
for i = numA+2,100,1 do
local sub = calculate:sub(numA+2,i)
if tonumber(sub) ~= nil then
num2 = sub
end
end
if symbol == "+" then
print(num1 + num2)
elseif symbol == "-" then
print(num1 - num2)
elseif symbol == "*" then
print(num1 * num2)
elseif symbol == "/" then
print(num1 / num2)
elseif symbol == "^" then
print(num1 ^ num2)
elseif symbol == "%" then
print(num1 % num2)
end
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Thanks for this, I actually had something similar done but my version didn't work. Drodex 2 — 4y
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idk what unstring mean so i just be dumb and put this
print(1 + 1) -- output: 2