Which of the following is not user defined data type?

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};

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

Answer: Option B

Explanation:

C data types classification are

Primary data types
1. int
2. char
3. float
4. double
5. void
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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