Q. Which of the following is a valid C++ identifier?

  • (A) 123variable
  • (B) variable_123
  • (C) @variable
  • (D) variable#123
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✅ Correct Answer: (B) variable_123
Explanation: C++ identifiers can contain letters, digits, and underscores, but cannot begin with a digit.

Published by Ranjeet ⭐ 34.60K Points at 14-Feb-2025 07:04 pm in C++

Explanation by: Ranjeet
C++ identifiers can contain letters, digits, and underscores, but cannot begin with a digit.

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