Objective1 markeasySolution
Which of the following is an invalid variable name in C?
- A_salary
- B1st_rank
- Ctotal_sum
- Dage2
C Programming
Verified Solution & Step-by-Step Explanation
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Correct Answer: (b) 1st_rank
Explanation: In C identifier rules, variable names must begin with a letter (uppercase or lowercase) or an underscore (_). They cannot begin with a numeric digit. Therefore, 1st_rank violates C identifier syntax rules.