Learning tasks

1. Task: Setup environment
2. Task: Print Hello World
3. Exercise: Hello world
4. Task: Get input from command line and print it
5. Hello Foo
6. Task: Get two numbers from the command line and do some calculations on them
7. Add two numbers in main
8. Set type of numbers
9. get two numbers from args and add them together
10. add protection to args (if , len)
11. add protection to number parsing
12. Exercise: rectangle, circle
13. Task: Implement file-based counter
14. Task: Word Count (wc)