IndiaBIX

C Programming - Declarations and Initializations - Discussion

Discussion Forum : Declarations and Initializations - General Questions (Q.No. 7)
Declarations and Initializations
7.
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};
1
2
3
Both 1 and 2
Answer: Option
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.)

Discussion:
48 comments Page 3 of 5.
Pradeep chandra said:   1 decade ago
Then what about string?
Ayana said:   1 decade ago
String belongs to array. Its array of characters.
Kavitha said:   1 decade ago
What is meant by user defined data type?
Vinita said:   1 decade ago
@Saru.

Does the value of val and num automatically get incremented?

And if val1 was not initialized what value it would have taken ?
Ragaveni said:   1 decade ago
@Kavitha.

User defined datatypes are defined by user as per user convenience and these are defined by making use of predefined datatypes.
Siddharth said:   1 decade ago
Is enum a user defined or derived data type or both?
Namrata said:   1 decade ago
Both 1 and 2 is the write answer. enum is user defined in c#. Rest are not.
Hari said:   1 decade ago
Actually primary data types are OK. But user defined data type does't contain pointer array, they are derived data type.
Amol Kotwal said:   1 decade ago
What is difference between Long int and Float data types?

Can anyone explain it?
Reshma said:   1 decade ago
String is user defined data type or primary data type? can anyone explain.
Post your comments here:

Your comments will be displayed after verification.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers