Beginner Projects

Build these on your own using what you learned in Level 1. Each one uses functions, lists, pattern matching, recursion, and simple input and output.

1. Number Guessing Game

Pick a secret number, read guesses with getLine, convert them with readMaybe (from Text.Read), and answer "higher" or "lower" until the player wins. Write the game loop as a recursive function that carries the attempt count.

2. Word Frequency Counter

Read a paragraph, split it into lowercase words with words and map toLower, and print each distinct word with how many times it appears. Use sort and group from Data.List.

3. Roman Numerals

Write toRoman :: Int -> String and fromRoman :: String -> Int using a list of (value, symbol) pairs and recursion. Check that converting back and forth gives the original number for 1 to 3999.

4. Grade Report

Store students as (name, [score]) tuples, compute each average with sum and fromIntegral, turn it into a letter grade with guards, and print an aligned report.

5. FizzBuzz, Five Ways

Write FizzBuzz with guards, with a case on a tuple of remainders, with a list comprehension, with zipWith over cycling lists, and with recursion. Compare which version reads best.