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Discussion :: Declarations and Initializations

  1. Identify which of the following are declarations

    1 : extern int x;
    2 : float square ( float x ) { ... }
    3 : double pow(double, double);

    2. A.
    1
    B.
    2
    C.
    1 and 3
    D.
    3

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    Answer : Option C

    Explanation :

    extern int x; - is an external variable declaration.

    double pow(double, double); - is a function prototype declaration.

    Therefore, 1 and 3 are declarations. 2 is definition.

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