--Calculator by Phatty
--v1.11
--Added Invalid usage message


Addit = "!add"
Subtract = "!sub"
Multiple = "!mult"
Divide = "!div"

Bot = "JÅšÕÑ™"


function DataArrival(user,data)
if strsub(data, 1, 1) == "<" then
		data=strsub(data,1,strlen(data)-1)
		s,e,cmd,main,nur = strfind(data,"%b<>%s+(%S+)%s+(%S+)%s+(%S+)")

	if cmd == Addit then
		if main  == nil or nr == nil then
		user:SendData(Bot, "Not a valid usage please try again ;)")
		return 1
		else
		Add = main + nur
			i = Add
			user:SendData(Bot,i)
		return 1
		end
	elseif cmd == Subtract then
		if main == nil  or nr == nil then
		user:SendData(Bot, "Not a valid usage please try again ;)")
		return 1
		else
		Sub = main - nur
			i = Sub
			user:SendData(Bot,i)
		return 1
		end
	elseif cmd == Multiple then
		if main == nil or nr == nil then
		user:SendData(Bot, "Not a valid usage please try again ;)")
		return 1
		else
		Mut = main * nur
			i = Mut
			user:SendData(Bot,i)
		return 1
		end
	elseif cmd == Divide then
		if main == nil or nr == nil then
		user:SendData(Bot, "Not a valid usage please try again ;)")
		return 1
		else
		Div = main / nur
			i = Div
			user:SendData(Bot,i)
		return 1
		end
		end
	end
end