Beginner Projects

Build these on your own using what you learned in Level 1. Each one uses variables, strings, arrays, dictionaries, loops, and functions.

1. Number Guessing Game

Pick a random number from 1 to 100 with rand(1:100), read guesses with readline(), say "higher" or "lower", and count the attempts. Use tryparse so input that isn't a number doesn't crash the program.

2. Unit Converter

Write small functions such as c_to_f, km_to_miles, and kg_to_lb, then print a conversion table for a range of values with @printf and the dot syntax (c_to_f.(-10:5:40)).

3. Word Frequency Counter

Read a paragraph, split it into lowercase words, count them in a Dict{String,Int}, and print the ten most common words, sorted by count.

4. Grade Book

Store students as named tuples with a name and a vector of scores, compute each average with sum(s) / length(s), assign letter grades with if/elseif, and print an aligned report.

5. Simple Statistics

Given a vector of numbers, compute the minimum, maximum, mean, median (sort and pick the middle), and standard deviation by hand — then compare your results with the Statistics standard library.