QUIZ ON : c - STRUCTURE AND UNION

STRUCTURE AND UNION

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Question No# : 01 out of 18

Which of the following is a User-defined data type?

A. typedef int Boolean;

B. typedef enum {Mon, Tue, Wed, Thu, Fri} Workdays;

C. struct {char name[10], int age};

D. all of the mentioned

Question No# : 02 out of 18

What will be the output of the following code?

struct { int si;

double d;

float *cp; } s ;

void main() {

printf(“%d, %d, %d”, sizeof(s.d), sizeof(s.cp), sizeof(s)); }

A. 4, 4, 12

B. 8, 2, 12

C. 10, 4, 16

D. 8, 4, 14

Question No# : 03 out of 18

What is the key difference between a structure and a union in C?

A. A structure can store multiple data types, a union cannot

B. A union can store multiple data types, a structure cannot

C. In a structure, only one member can be accessed at a time

D. In a union, only one member can be accessed at a time

Question No# : 04 out of 18

What is the size of a union in C?

A. The size of the largest member

B. The sum of the sizes of all members

C. Twice the size of the largest member

D. Size of the smallest member

Question No# : 05 out of 18

User-defined data type can be derived by

A. struct

B. enum

C. typedef

D. all of the mentioned

Question No# : 06 out of 18

Which operator connects the structure name to its member name?

A. - (Minus)

B. <- (Left Arrow)

C. . (Dot)

D. Both <- and .

Question No# : 07 out of 18

In C, a struct is used to group together:

A. Variables of the same type

B. Variables of the different type

C. Functions and variables

D. Only functions

Question No# : 08 out of 18

Which of the following cannot be a structure member?

A. Another structure

B. Function

C. Array

D. None of the mentioned

Question No# : 09 out of 18

Which of the following access a variable in structure b?

A. b->var;

B. b.var;

C. b-var;

D. b>var;

Question No# : 10 out of 18

Difference between structure and union is

A. We can define functions within structures but not within a union

B. We can define functions within union but not within a structure

C. The way memory is allocated

D. There is no difference

Question No# : 11 out of 18

Which of the data types has the size that is variable?

A. int

B. struct

C. float

D. double

Question No# : 12 out of 18

enum types are processed by _________

A. Compiler

B. Preprocessor

C. Linker

D. Assembler

Question No# : 13 out of 18

Which of the following statements about structures in C is correct?

A. Structures cannot contain arrays

B. Structures cannot contain other structures

C. Structures can have members of different data types

D. Structures are the same as arrays

Question No# : 14 out of 18

What is the similarity between a structure, union and enumeration?

A. All of them let you define new values

B. All of them let you define new data types

C. All of them let you define new pointers

D. All of them let you define new structures

Question No# : 15 out of 18

Which of the following is a properly defined struct?

A. struct {int a;}

B. struct a_struct {int a;}

C. struct a_struct int a;

D. struct a_struct {int a;};

Question No# : 16 out of 18

Which properly declares a variable of struct Student?

A. struct stu;

B. struct Student stu;

C. stu;

D. int stu

Question No# : 17 out of 18

If a structure contains another structure as a member, it is called:

A. Nested structure

B. Recursive structure

C. Union structure

D. Inline structure

Question No# : 18 out of 18

Which of the following are themselves a collection of different data types?

A. string

B. structures

C. char

D. all of the mentioned