C++ Programming MCQ Test 2 : Question 10

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Which of the following is a valid identifier in C++ ?

A) 7var_name

B) 7VARNAME

C) VAR_1234

D) $var_name

sec

Please first select an option.

The correct answer is C) VAR_1234

Let's analyze each option:

• A) 7var_name : This identifier starts with a digit (7), which is not allowed. Identifiers cannot start with digits.


• B) 7VARNAME : This identifier also starts with a digit (7), which is not allowed. Identifiers cannot start with digits.


• C) VAR_1234 : This identifier follows all the rules. It starts with letters (VAR), followed by an underscore and digits (1234). This is a valid identifier.


• D) $var_name : This identifier starts with a dollar sign $, which is not allowed in C++. So, this is not a valid identifier as well.

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