Which of the following is a valid variable name?
Correct answer: D. ABC
- A. 2kgms
- B. #house
- C. Roll no
- D. ABC
Explanation
The correct answer is: (d) _ABC(a) 2kgms - Variable names cannot start with a number.(b) #house - While some languages allow the use of the # symbol for special purposes (like defining preprocessor directives in C/C++), it's generally not a valid character for variable names in most programming languages.(c) Roll no - Spaces are not allowed within variable names in most programming languages. You could alternatively use roll_no or rollNo (depending on the language's conventions).
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