Question

Write a Haskell function integerSqrt that returns the integer square root of a positive integer n. (The integer square root is defined to be the largest integer whose square is less than or equal to n, i.e. the result of integerSqrt 15 is 3.). integerSqrt :: Integer -> Integer

Answer 1

ANSWER:

AS PER THE QUESTION GIVEN

Haskell function

A program in Haskell which returns the integer square root of a positive integer n.

--function declaration
integerSqrt :: Int -> Int
--function definition
integerSqrt num = aux num
where
    aux temp
      | temp * temp > num = aux (temp - 1)
      | otherwise = temp

main = do
   -- display message
   putStrLn "Integer square root is: "
   --calling a function
   print(integerSqrt 15)   

The screenshot of the above code is given below:

OUTPUT:

Integer square root is:                                                                                                              

3

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