calculateBetter

--please put operations in order
args = {...}
if args[1] == "ans" then
args = {...}
lastAnswer = fs.open("Ans","r")
args[1] = lastAnswer.readAll()
lastAnswer.close()
end
symbol = {}
beforeSymbol = {args[1]}
afterSymbol = {}
for i=1,#args do
 if (args[i] == "+") or (args[i] == "-") or (args[i] == "/") or (args[i] == "*") then
  table.insert(symbol,args[i])
  table.insert(afterSymbol,args[i+1])
 end
end
output = beforeSymbol[1]
for a=1,#symbol do
 if symbol[a] == "+" then
  output = output+afterSymbol[a]
 elseif symbol[a] == "-" then
  output = output-afterSymbol[a]
 elseif symbol[a] == "/" then
  output = output/afterSymbol[a]
 elseif symbol[a] == "*" then
 output = output*afterSymbol[a]
 end
end
print(output)
lastAnswer = fs.open("Ans","w")
lastAnswer.write(output)
lastAnswer.close()