Question

Match List - I with List - II. 

List - I		List - II
A.	typedef in C	I.	modifies the memory allocated to a variable
B.	enum in C	II.	stores memory address
C.	type casting	III.	is similar to struct
D.	pointer	IV.	redefines the name of existing data types

Choose the correct answer from the options given below:

• A. A-IV, B-III, C-II, D-I
• B. A-III, B-IV, C-I, D-II
• C. A-III, B-IV, C-II, D-I
• D. A-IV, B-III, C-I, D-II

Hint:

Remember: typedef is just a "nickname" for a type. enum is for lists of names. Pointer is an "arrow" pointing to a location in RAM.

Answer 1

The Correct Option is D

We match these C programming constructs with their fundamental purposes. 1. typedef in C (A-IV): The typedef keyword is used to create an alias for a data type. It redefines the name of existing data types to make code more readable or portable. 2. enum in C (B-III): An enum (enumeration) is a user-defined data type used to assign names to integral constants. In terms of declaration and user-defined nature, it is similar to struct (though its behavior is different). 3. Type Casting (C-I): Type casting is a way to convert a variable from one data type to another. In the context of memory, it essentially modifies (the interpretation of) the memory allocated to a variable for a specific operation. 4. Pointer (D-II): A pointer is a variable that stores the memory address of another variable.