UGC NET CSE | June 2009 | Part 2 | Question: 16

Question

Which of the following does not represent a valid storage class in ’c’?

• A. automatic
• B. static
• C. union      
• D. extern

Answer 1

There are 4 storage classes in C :

1)  Static

2) Extern

3) Auto

4) Register

"Union" is a data type and not a storage class..Storage class gives the visibility and locality information of variables used in a program..For example , every function has its own static area and hence the visibility of a static variable is within the particular function in which it is defined..

Hence C) is the correct answer 

Answer 2

Union is kind of container datatype.

Answer 3

Ans: C

A storage class defines the scope (visibility) and life-time of variables and/or functions within a C Program. They precede the type that they modify. We have four different storage classes in a C program −

• auto
• register
• static
• extern