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Ranjeet • 34.60K Points
Instructor I 

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

  • (A) 123variable
  • (B) variable_123
  • (C) @variable
  • (D) variable#123
  • Correct Answer - Option(B)
  • Views: 36
  • Filed under category C++
Explanation by: Ranjeet 
C++ identifiers can contain letters, digits, and underscores, but cannot begin with a digit.

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