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Discussion :: Declarations and Initializations

  1. Which of the following is not user defined data type?

    1 : 
    struct book {     char name[10];     float price;     int pages; };
    2 : 
    long int l = 2.35;
    3 : 
    enum day {Sun, Mon, Tue, Wed};

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

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    Answer : Option B

    Explanation :

    C data types classification are

    1. Primary data types
      1. int
      2. char
      3. float
      4. double
      5. void
    2. Secondary data types (or) User-defined data type
      1. Array
      2. Pointer
      3. Structure
      4. Union
      5. Enum

    So, clearly long int l = 2.35; is not User-defined data type.
    (i.e.long int l = 2.35; is the answer.)

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