Sqrt in Lua

To get the square root of a number in Lua, you can use the math.sqrt() function. Here's an example:

-- Getting the square root of a number
local num = 25
local sqrt_num = math.sqrt(num)
print(sqrt_num) -- Output: 5

In this example, we assign the value of 25 to the variable num. Then we use the math.sqrt() function to get its square root, which is assigned to the variable sqrt_num. Finally, we print the value of sqrt_num, which should be 5.

Here's another example with user input:

-- Getting the square root of a number entered by the user
print("Enter a number: ")
local num = tonumber(io.read()) -- Convert user input to a number
local sqrt_num = math.sqrt(num)
print("The square root of " .. num .. " is " .. sqrt_num)

In this example, we prompt the user to enter a number, which is then converted to a number using tonumber(). Then, we compute the square root using math.sqrt(). Finally, we print the result using the concatenation operator .. to combine strings and values.