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Programming Paradigms |
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Lab 7. Input and output in Haskell |
Outline
- ● Higher-order functions and lists in Haskell recap
- ● Adding user’s numbers
- ● Exercise: N-body simulation
Adding user’s numbers
Exercise 6.1.
Implement a program sumOfTwoInputs that reads two integers from standard input and prints their sum.
Exercise 6.2.
Implement a program sumOfManyInputs that reads a number N followed by N integers from standard input and prints their sum.
Running a one-question test
Exercise 6.3.
Design types Question and Answer, and implement a function runQuestion :: Question -> IO Answer
that asks the question to the standard output and collects a numeric answer from the standard input. What should the program do when no answer is given? Modify the type of runQuestion accordinly.
Running a full test
Exercise 6.4.
Implement a function runQuestions that runs a series of questions and collects answers for all of them.
Exercise 6.5.
Design types Test and TestAnswers, and implement a function
runTest :: Test -> IO TestAnswers
that asks runs a test (a series of questions) and collects a user answers from the standard input.
Introducing more types of questions
Exercise 6.6.
Extend types Question and Answer to support True-or-False questions. Exercise 6.7.
Extend types Question and Answer to support multiple choice questions.
Exercise 6.8.
Extend types Question and Answer to support free text responses.
Grading user’s answers
Exercise 6.9.
Design the types Checker and TestChecker to represent checkers for individual questions and entire test correspondingly.
Exercise 6.10.
Implement function gradeTest to grade TestAnswers using TestChecker.
