What is a statement?
What is a code element that acts on an expression?
What does an operator combine?
What is the plus (+) sign?
What is a binary operator?
What is a ternary operator?
Do mathematical operators take letters as operands?
What type of operand is an Array Index?
If you use two ampersands (&&) instead of one (&), will you get an error?
What does isset() do?
Write a switch statement that adds, subtracts, multiplies, or divides x using the action variable.
What does the break keyword do?
Write a for loop to count from 10 to 1.
See the Appendix for the answers to these questions.