Lua with user input

Question

What am I doing wrong with this Lua code? I am trying to generate two random numbers and ask what they are multiplied together. The first part is good, but no matter what I type as the answer, it always thinks that it is incorrect. Please tell me what I am doing wrong and how to fix it. Remember this is Lua.

math.randomseed(os.time())
local a=math.random(10)
local b=math.random(10)


local answer
repeat
io.write("What is ",a,"*",b,"?")    
io.flush()  
answer=io.read()
if answer==a*b then
print("Correct!")
else
print("Try Again")
end
until
answer==a*b

Lily Ballard · Accepted Answer · 2013-03-15 21:56:19Z

4

io.read() returns a string, and you're comparing it with a number.

You either need to say answer=tonumber(io.read()), or you need to say io.read("*n").

answered Mar 15, 2013 at 21:56

Lily Ballard

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1 Comment

Martin Ender Over a year ago

@user2059810 welcome to stackoverflow! consider accepting Kevin's answer (by clicking the check mark) to give him some credit and show future visitors that (and how) your problem has been solved

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