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1
Script cannot find different numbers or characters from a string?
Hello ScriptingHelpers community!
Today I started to get better with string manipulation. What I want to do is:
The script takes a string, let's say "1 + 2" Script does the operation and prints it.
The code I tried:
local s = "1 + 2"
local Data = s:split(" ")
local Number
local Number2
local sum
for i,v in pairs(Data) do
if string.find(v, "%d") then
if not Number then
Number = v
print("First number is "..v)
else
print("Second number is "..v)
Number2 = v
end
elseif string.find(v, "%W") then
print("Special character is "..v)
if v == "+" then
sum = Number + Number2
elseif v == "-" then
sum = Number - Number2
elseif v == "*" then
sum = Number * Number2
elseif v == "/" then
sum = Number / Number2
end
end
end
print(sum)
So, what I did wrong? Edit: The script either finds both numbers or only first number and the special character
1 answer
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1
The mistake you made is adding while number 2 is still nil. So just move the part that does the math to after the loop:
local s = "1 + 2"
local Data = s:split(" ")
local Number
local Number2
local sum
local operation -- new variable
for i,v in pairs(Data) do
if string.find(v, "%d") then
if not Number then
Number = v
print("First number is "..v)
else
print("Second number is "..v)
Number2 = v
end
else
print("Special character is "..v)
operation = v -- set the variable to use later, after Number2 is set bc it's the last entry in the table ur looping through
end
end
if operation == "+" then -- it's been moved to after the loop
sum = Number + Number2
elseif operation == "-" then
sum = Number - Number2
elseif operation == "*" then
sum = Number * Number2
elseif operation == "/" then
sum = Number / Number2
end
print(sum) -- works
0
Thank you so much! SuperPuiu 497 — 2y