Programming Fundamentals/Loops/Lua
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loops.lua
[edit | edit source]-- This program demonstrates While, Do, and For loop counting using
-- user-designated start, stop, and increment values.
--
-- References:
-- https://www.lua.org/manual/5.1/manual.html
function get_value(name)
local value
io.write("Enter ", name, " value:", "\n")
value = tonumber(io.read())
return value
end
function while_loop(start, stop, increment)
io.write("While loop counting from ", start, " to ", stop,
" by ", increment, ":", "\n")
local count
count = start
while count <= stop do
io.write(count, "\n")
count = count + increment
end
end
function do_loop(start, stop, increment)
io.write("Do loop counting from ", start, " to ", stop,
" by ", increment, ":", "\n")
local count
count = start
repeat
io.write(count, "\n")
count = count + increment
until not (count <= stop)
end
function for_loop(start, stop, increment)
io.write("For loop counting from ", start, " to ", stop,
" by ", increment, ":", "\n")
local count
for count = start, stop, increment do
io.write(count, "\n")
end
end
function main()
local start
local stop
local increment
start = get_value("starting")
stop = get_value("ending")
increment = get_value("increment")
while_loop (start, stop, increment)
do_loop (start, stop, increment)
for_loop (start, stop, increment)
end
main()
Try It
[edit | edit source]Copy and paste the code above into one of the following free online development environments or use your own Lua compiler / interpreter / IDE.