for loop with start, end and step
Conditionals and loops example from a Well House Consultants training course
More on Conditionals and loops [link]
Source code: tchart Module: U103
This example shows a loop that goes around 11 times - whether it's counting
up or down, in whole number steps or in decimal steps. You'll also notice
that I have used integer constants but the calculations have been done floating
point when I ran the code. That's because everything is double precision
float internally in lua - use math.floor and math.ceil to round down or up.
io.write("Where jastart ")
start_at = tonumber(io.read())
io.write("Where jaend ")
end_at = tonumber(io.read())
step = (end_at - start_at) / 10
for cent=start_at,end_at,step do
faren = cent / 5 * 9 + 32
if cent < 0 then
state = "solid"
elseif cent > 100 then
state = "gas"
state = "liquid"
end -- if
temp1 = string.format("%7.2f",cent)
temp2 = string.format("%7.2f",faren)
io.write (temp1 .. " - " ..temp2 .. " it is "..state .. "\n")
--[[ ---------- Sample Output -------------
[trainee@easterton nts]$ lua tchart
Where jastart -23
Where jaend 108
-23.00 - -9.40 it is solid
-9.90 - 14.18 it is solid
3.20 - 37.76 it is liquid
16.30 - 61.34 it is liquid
29.40 - 84.92 it is liquid
42.50 - 108.50 it is liquid
55.60 - 132.08 it is liquid
68.70 - 155.66 it is liquid
81.80 - 179.24 it is liquid
94.90 - 202.82 it is liquid
108.00 - 226.40 it is gas
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This example comes from our "Conditionals and loops" training module. You'll find a description of the topic and some other closely related examples on the "Conditionals and loops" module index page.
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