Need help making Menu

start = 1
if start == 1 then
local input1 = 0
local input2 = 0
local input3 = 0
print("Enter bot's coords")
print(" ")
io.write("X: ")
x1 = io.read()
if x1 == 0 then
  input1 = 0
else
  input1 = x1 + input1
end
print(" ")
io.write("Y: ")
y1 = io.read()
if y1 == 0 then
  input2 = 0
else
  input2 = y1 + input2
end
print(" ")
io.write("Z: ")
z1 = io.read()
if z1 == 0 then
  input3 = 0
else
  input3 = z1 + input3
end
term.clear()
term.setCursorPos( 1, 1 )
print("Your Bot's location is:")
io.write(" X: "..input1)
io.write("   Y: "..input2)
io.write("   Z: "..input3)
print(" ")
print("Make sure these are right")
print("if they are not press ctrl+t")
sleep(10)
term.clear()
term.setCursorPos( 1, 1 )
print("Good, Now what do you want to do?")
term.clear()
term.setCursorPos( 1, 1 )
print("")
print("---------------------------------")
print("	   Orbital Strike Mode   (1) ")
print("---------------------------------")
print("		   Mining Mode	   (2) ")
print("---------------------------------")
print("		Transporting Mode	(3) ")
print("---------------------------------")
print("")
print("")
sleep(1)
c1 = io.read() -- added () to end of read function
if c1 == "1" then -- put quotes around the 1
  print("")
  print("----------------------------------------------------")
  print(" **   *   *	 *	   *  * *  * * ___________ *   ")
  print("	**  *   *	*  * *   * *  * * |___________|   *")
  print("  Orbital Strike Mode   * *  *	*|		   | *  ")
  print(" *  *   *	 *   *	*  * *   *  |	TNT	|   *")
  print("   * *Have Fun!   *  *   * *	 * |___________|*   ")
  print("  *	 *  *	*	  * *	*   *|___________|  * ")
  print("----------------------------------------------------")
  sleep(10)
  term.clear()
  term.setCursorPos( 1, 1 ) -- was erm.setCursorPos changed to term.setCursorPos
end
end -- added an end

function writePos(x,y,text)
term.setCursorPos(x,y)
term.write(text)
end
function clear(x,y)
term.clear()
if x == nil or y == nil then
  term.setCursorPos(1,1)
else
  term.setCursorPos(x,y)
end
end
local start = 1
local input1 = 0
local input2 = 0
local input3 = 0
local cursorPos = 1
local tCoords  = {
0;
0;
0
} -- you can change these default values to what you want
if start == 1 then
while true do
  clear()
  writePos(1,18,tCoords[1].." "..tCoords[2].." "..tCoords[3])
  writePos(1,1,"Enter bot's coords")
  writePos(2,3,"X:")
  writePos(2,4,"Y:")
  writePos(2,5,"Z:")
  writePos(2,6,"Done")
  writePos(1,2+cursorPos,">")
  for i = 1,#tCoords do
   writePos(5,2+i,tCoords[i])
  end
  event, key = os.pullEvent()
  if key == 200 and cursorPos > 1 then
   cursorPos = cursorPos-1
  elseif key == 208 and cursorPos < 4 then
   cursorPos = cursorPos+1
  elseif key == 28 then
   if cursorPos == 1 then
	term.setCursorPos(5,3)
	local input = read()
	if input == "0" then
	 tCoords[1] = 0
	else
	 tCoords[1] = tonumber(input)+tCoords[1]
	end
   elseif cursorPos == 2 then
	term.setCursorPos(5,4)
	local input = read()
	if input == "0" then
	 tCoords[2] = 0
	else
	 tCoords[2] = tonumber(input)+tCoords[2]
	end
   elseif cursorPos == 3 then
	term.setCursorPos(5,5)
	local input = read()
	if input == "0" then
	 tCoords[3] = 0
	else
	 tCoords[3] = tonumber(input)+tCoords[3]
	end
   elseif cursorPos == 4 then
	input1 = tCoords[1]
	input2 = tCoords[2]
	input3 = tCoords[3]
	break
   end
  end
end
writePos(1,17,"Make sure these coordinates are right")
writePos(1,18,"if they are not press backspace")
event, key = os.pullEvent()
if key == 14 then
  os.reboot()
else
end
clear(1,1)
print("Good, Now what do you want to do?")
sleep(2)
clear(1,1)
writePos(1,2,"---------------------------------")
writePos(1,3,"	   Orbital Strike Mode   (1) ")
writePos(1,4,"---------------------------------")
writePos(1,5,"		   Mining Mode	   (2) ")
writePos(1,6,"---------------------------------")
writePos(1,7,"		Transporting Mode	(3) ")
writePos(1,8,"---------------------------------")
writePos(1,9,"Option: ")
c1 = io.read()
if c1 == "1" then
  print("")
  print("----------------------------------------------------")
  print(" **   *   *	 *	   *  * *  * * ___________ *   ")
  print("	**  *   *	*  * *   * *  * * |___________|   *")
  print("  Orbital Strike Mode   * *  *	*|		   | *  ")
  print(" *  *   *	 *   *	*  * *   *  |	TNT	|   *")
  print("   * *Have Fun!   *  *   * *	 * |___________|*   ")
  print("  *	 *  *	*	  * *	*   *|___________|  * ")
  print("----------------------------------------------------")
  sleep(10)
  term.clear()
  term.setCursorPos( 1, 1 )
end
end