Where am I

--Where am I?
lnum = 0
x = 100
y = 64
z = 20
look = 0



function getCords()
	if peripheral.find("modem") == false then
		printError("No modem attatched")
		error()
	end

	shell.run("clear")

	term.write("Current Position is...")
	term.write(" "..x.." "..y.." "..z)
	print()
end

function getLocation()
	if fs.exists("locations") == false then
		print("No locations file. Would you like to create one? (y/n)")
		input = read()
		if input == "y" then
			locFile = fs.open("locations","w")

			locFile.write("<Location Format: The Z Cordinate: (Next Line) Name of location> DELETE THIS TEXT")

			locFile.close()
			shell.run("clear")
			print("Locations File Created!")
			error()
		elseif input == "n" then
			print("Okay!")
			error()
		end

	elseif fs.exists("locations") == true then
		location = z
	end

	files = fs.open("locations","r")

	repeat
		line = files.readLine()

		if line == z then
			linenum = linenum + 1
			print("You are at "..files.readLine())
		else
			files.readLine()
		end

	until line == nil

	print("No location found")
end

getCords()
getLocation()