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Home ‣ C Programming ‣ Declarations and Initializations See What Others Are Saying!
  • Question

  • If the definition of the external variable occurs in the source file before its use in a particular function, then there is no need for an extern declaration in the function.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    Explanation
    True, When a function is declared inside the source file, that function(local function) get a priority than the extern function. So there is no need to declare a function as extern inside the same source file.

    More questions

    • 1. Bitwise | can be used to set a bit in number.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 2. Can we have an array of bit fields?

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. By default structure variable will be of auto storage class

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 4. Bitwise can be used to reverse a sign of a number.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 5. Is it necessary that in a function which accepts variable argument list there should be at least be one fixed argument?

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 6. Bitwise can be used to generate a random number.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 7. A function that receives variable number of arguments should use va_arg() to extract the last argument from the variable argument list.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. Bitwise & can be used to check if more than one bit in a number is on.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The preprocessor can trap simple errors like missing declarations, nested comments or mismatch of braces.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. It is necessary that a header files should have a .h extension?

    • Options
    • A. Yes
    • B. No
      • Discuss

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