By default, the data type of a constant without a decimal point is int, whereas the one
with a decimal point is a double.
We want to test whether a value lies in the range 2 to 4 or 5 to 7. Can we do this using a switch?
Can we use a switch statement to switch on strings?
The way the break is used to take control out of switch and continue to take control
of the beginning of the switch?
A char variable can store either an ASCII character or a Unicode character.