Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

( c ) Let the following Haskell program be given main :: IO ( ) main = getLine > > = mainLoop where mainLoop previousInput

(c) Let the following Haskell program be given
main :: IO ()
main = getLine >>= mainLoop
where mainLoop previousInput = do
{
putStrLn (previousInput ++"!");
i <- getLine;
if i /= previousInput then
mainLoop i
else
return ()
}
(i) Explain informally how this code works. Under which condition will this
program terminate?
(ii) Give the output assuming that the user enters successively Hi
Program ??(where each
corresponds to hitting the return/enter key).
(iii) What is the type of the subexpression mainLoop?
[5 marks]
CS-205: Page 2 of 5

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Relational Database And Transact SQL

Authors: Lucy Scott

1st Edition

1974679985, 978-1974679980

More Books

Students also viewed these Databases questions

Question

Use a three-step process to develop effective business messages.

Answered: 1 week ago