Quiz for Enumerations enum

Q1: What keyword is used to declare an enumeration in C?

A. enum B. switch C. struct D. union

Q2: By default, what value does the first enumerator have?

A. 0 B. 1 C. -1 D. Undefined

Q3: Can you assign custom values to enumerators?

A. Yes B. No C. Only positive values D. Only zero or one

Q4: What type is an enum variable in C?

A. int B. float C. char D. double

Q5: Can enumerators have duplicate values?

A. Yes B. No C. Only if explicitly declared D. Only if consecutive

Q6: How many enumerators can an enum have?

A. Unlimited B. Maximum 10 C. Maximum 256 D. Only 5

Q7: Can an enum variable be assigned a value outside the defined enumerators?

A. Yes B. No C. Only zero D. Only defined values

Q8: What is the size of an enum type?

A. Depends on compiler but usually sizeof(int) B. Always 1 byte C. Always 2 bytes D. Always 4 bytes

Q9: How to define an enum named Color with values RED, GREEN, BLUE?

A. enum Color {RED, GREEN, BLUE}; B. Color enum {RED, GREEN, BLUE}; C. enum {Color RED, GREEN, BLUE}; D. enum Color RED, GREEN, BLUE;

Q10: Which header file is required to use enum?

A. No header required B. #include <stdio.h> C. #include <stdlib.h> D. #include <enum.h>

Q11: Can enums be used in switch-case statements?

A. Yes B. No C. Only with integers D. Only with strings

Q12: What happens if you do not assign a value to an enumerator?

A. It takes the previous value +1 B. It defaults to 0 C. It causes an error D. It becomes NULL

Q13: Are enums strongly typed in C?

A. No B. Yes C. Only in C99 D. Only in C11

Q14: Can you forward declare an enum in C?

A. No B. Yes C. Only in C++ D. Only with typedef

Q15: What is the use of typedef with enum?

A. To create a new type name B. To declare a variable C. To define a function D. To initialize values

Q16: How to declare a variable color of enum type Color?

A. enum Color color; B. Color enum color; C. int color; D. enum color Color;

Q17: Is it possible to print enum values directly?

A. No, must cast to int or use mapping B. Yes, always C. Only in C11 D. Only with %s format

Q18: Can enumerators have negative values?

A. Yes B. No C. Only zero or positive D. Only positive

Q19: What is the scope of enumerators?

A. Global within the enclosing scope B. Local only C. File scope only D. Function scope only