Question

Which of the following is true?

a. Identifiers cannot be named with a name that startswith a $.

b. Identifiers cannot be named with a name that startswith a digit.

c. Identifiers cannot be named with a name that startswith a _.

d. Identifiers cannot be named with a name that startswith a $.

Answer 1

Answer:

Only c is False rest of them are True.

Explanation:

Identifier is a name given to a variable,function,class etc.

Following are the properties of an Identifiers :-

1. They are combination of lower case (a-z) and upper case (A-Z)  and digits(0-9) and underscore(_).
2. It cannot start with a digit.
3. It cannot use special symbols .
4. they can be of any length.
5. Keywords cannot be used as an Identifier.

So all of them are matching these properties of identifier except option option C.