For these exercises, we’re only going to use IRB.
Remember: To run IRB, open a command line window (Powershell or Terminal). Then enter the command
irb and press Enter.
To exit a running IRB, enter the command
- Play around with numbers and their operators (addition, subtraction, multiplication, division)! For example, calculate your age from the year you were born in.
- What is special about the division operator?
- There is another operator we haven’t talked about yet. It’s called “modulo” and uses the
%character. Try this in IRB:
8 % 3. What’s the result? Can you figure out what the operator does by experimenting with the numbers? If not, no problem, just google it!