Which of the following special symbol allowed in a variable name?

A. * (asterisk)
B. | (pipeline)
C. – (hyphen)
D. _ (underscore)

1 thought on “Which of the following special symbol allowed in a variable name?”

  1. D. _ (underscore)
    Variable names in C are made up of letters (upper and lower case) and digits. The underscore character (“_”) is also permitted. Names must not begin with a digit.

    Examples of valid (but not very descriptive) C variable names:
    => foo
    => Bar
    => BAZ
    => foo_bar
    => _foo42
    => _
    => QuUx

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