5.2.1 - Overview of Structures.

1. What is a structure in C?

(A) A data type that holds a single value
(B) A user-defined data type that can hold multiple values of different types
(C) A reserved keyword
(D) A collection of functions

Correct Answer: (B) A user-defined data type that can hold multiple values of different types

2. Which keyword is used to define a structure in C?

(A) struct
(B) union
(C) enum
(D) class

Correct Answer: (A) struct

3. How do you access members of a structure?

(A) Using the * operator
(B) Using the . operator and -> operator
(C) Using the & operator
(D) Using the | operator

Correct Answer: (B) Using the . operator and -> operator

4. What does the following code declare?

            struct stud {
                char name[80];
                int roll;
                float mark;
            };

(A) A structure with members of the same type
(B) A union
(C) A structure with three different members
(D) An enumeration

Correct Answer: (C) A structure with three different members

5. What will be the output of this code?

            struct stud {
                char name[80];
                int roll;
                float mark;
            } st;
            
            st.roll = 100;
            printf("%d", st.roll);

(A) 0
(B) 100
(C) Garbage value
(D) Compilation error

Correct Answer: (B) 100

6. How can you define a structure variable without giving it a name?

(A) struct stud st;
(B) struct { char name[80]; int roll; } st;
(C) struct stud;
(D) struct stud {};

Correct Answer: (B) struct { char name[80]; int roll; } st;

7. What does the sizeof operator return when used with a structure?

(A) The size of the first member
(B) The size of the entire structure
(C) The size of the pointer to the structure
(D) The size of each member

Correct Answer: (B) The size of the entire structure

8. Which of the following correctly defines a function that takes a structure as an argument?

(A) void printStud(struct stud s);
(B) void printStud(struct *s);
(C) void printStud(struct stud *s);
(D) Both A and C

Correct Answer: (D) Both A and C

9. What will happen if you try to access a member of a structure through a null pointer?

(A) The program will work correctly
(B) It will cause a segmentation fault
(C) It will print a random value
(D) It will result in a compile-time error

Correct Answer: (B) It will cause a segmentation fault

10. How do you return a structure from a function?

(A) By passing a pointer to the structure
(B) By returning the structure directly
(C) Both A and B
(D) You cannot return a structure from a function

Correct Answer: (C) Both A and B

11. Which operator is used to access structure members through a pointer?

(A) . (dot)
(B) * (dereference)
(C) -> (arrow)
(D) & (address)

Correct Answer: (C) -> (arrow)

12. What is the output of the following code?

            struct Point {
                int x;
                int y;
            };
            
            struct Point p = {3, 4};
            printf("%d", p.x);

(A) 4
(B) 3
(C) 0
(D) Compilation error

Correct Answer: (B) 3

13. What type of variable is created when defining a structure without a name?

(A) A global variable
(B) A local variable
(C) An unnamed structure variable
(D) A pointer variable

Correct Answer: (C) An unnamed structure variable

14. What is the primary use of using structures in C?

(A) To group related data
(B) To create dynamic memory
(C) To perform mathematical calculations
(D) To create an infinite loop

Correct Answer: (A) To group related data

15. How can you initialize a structure in C?

(A) By assigning values directly
(B) Using a constructor
(C) Through a function only
(D) You cannot initialize a structure

Correct Answer: (A) By assigning values directly

16. What will be the output of this code?

            struct stud {
                char name[80];
                int roll;
                float mark;
            } s1 = {"John", 101, 85.5};
            
            printf("%s", s1.name);

(A) 0
(B) John
(C) Compilation error
(D) It will print garbage value

Correct Answer: (B) John

17. Which of the following can be a member of a structure?

(A) int, float, char arrays
(B) another structure
(C) pointers
(D) All of the above

Correct Answer: (D) All of the above

18. Which statement is true regarding unions and structures?

(A) Unions use more memory than structures
(B) Structures can hold different types of data, while unions hold one type
(C) Structures can only hold integers
(D) Unions can have only one member

Correct Answer: (B) Structures can hold different types of data, while unions hold one type

19. How do you define a structure with a member that is another structure?

(A) struct outer { struct inner; };
(B) struct outer { struct inner innerStruct; };
(C) struct outer { struct inner(); };
(D) struct outer { inner; };

Correct Answer: (B) struct outer { struct inner innerStruct; };

20. What is the default access specifier for structure members in C?

(A) public
(B) private
(C) protected
(D) There are no access specifiers in C

Correct Answer: (D) There are no access specifiers in C

5.2.2 - Arrays vs Structures.

21. What is an array in C?

(A) A collection of elements of the same data type
(B) A collection of elements of different data types
(C) A single variable that holds one value
(D) A reserved keyword

Correct Answer: (A) A collection of elements of the same data type

22. What is a structure in C?

(A) A collection of elements of the same data type
(B) A collection of elements of different data types
(C) A single variable that holds one value
(D) A reserved keyword

Correct Answer: (B) A collection of elements of different data types

23. How do you access an array element?

(A) Using the . operator
(B) Using the -> operator
(C) Using the [] operator
(D) Using the & operator

Correct Answer: (C) Using the [] operator

24. How do you access a structure member?

(A) Using the [] operator
(B) Using the . operator or -> operator
(C) Using the & operator
(D) Using the * operator

Correct Answer: (B) Using the . operator or -> operator

25. Can an array hold elements of different data types?

(A) Yes
(B) No
(C) Only if the elements are pointers
(D) Only in a structure

Correct Answer: (B) No

26. Can a structure hold an array as a member?

(A) Yes
(B) No
(C) Only if the array is of fixed size
(D) Only if the structure is dynamic

Correct Answer: (A) Yes

27. What is the default size of an array in C?

(A) 1
(B) 10
(C) Depends on the type of data stored
(D) There is no default size

Correct Answer: (D) There is no default size

28. How do you declare a structure that includes an array?

(A) struct { int arr[10]; } myStruct;
(B) struct myStruct { int arr[]; };
(C) struct myStruct { int arr; };
(D) struct myStruct { int arr[10]; };

Correct Answer: (D) struct myStruct { int arr[10]; };

29. What happens if you access an out-of-bounds index in an array?

(A) It will cause a compile-time error
(B) It will print garbage value
(C) It will crash the program
(D) The program will work correctly

Correct Answer: (B) It will print garbage value

30. What happens if you access a member of a structure that is not initialized?

(A) It will print a default value
(B) It will print garbage value
(C) It will cause a segmentation fault
(D) It will cause a compile-time error

Correct Answer: (B) It will print garbage value

31. How do you define an array of structures?

(A) struct stud arr[10];
(B) struct stud *arr;
(C) struct { struct stud arr[10]; }
(D) struct arr[10] { stud; };

Correct Answer: (A) struct stud arr[10];

32. Which of the following can be members of a structure?

(A) Another structure
(B) Arrays
(C) Pointers
(D) All of the above

Correct Answer: (D) All of the above

33. How do you initialize an array of integers with 5 elements?

(A) int arr[5] = {1, 2, 3, 4, 5};
(B) int arr = {1, 2, 3, 4, 5};
(C) int arr[5] = (1, 2, 3, 4, 5);
(D) int arr[5]; arr = {1, 2, 3, 4, 5};

Correct Answer: (A) int arr[5] = {1, 2, 3, 4, 5};

34. Can a structure contain another structure?

(A) Yes
(B) No
(C) Only if it’s a pointer to another structure
(D) Only in dynamic memory

Correct Answer: (A) Yes

35. Which has a fixed size: array or structure?

(A) Array
(B) Structure
(C) Both have fixed sizes
(D) Neither have fixed sizes

Correct Answer: (A) Array

36. What is the size of a structure with two int members?

(A) 2 bytes
(B) 4 bytes
(C) 8 bytes
(D) Depends on the compiler and architecture

Correct Answer: (D) Depends on the compiler and architecture

37. What is the output of this code?

            struct stud {
                int roll;
                char name[20];
            } student = {101, "Alice"};
            
            printf("%d", student.roll);

(A) Alice
(B) 0
(C) 101
(D) Compilation error

Correct Answer: (C) 101

38. Can you use an array in a function as a parameter?

(A) Yes
(B) No
(C) Only if it’s a pointer
(D) Only if it’s a global array

Correct Answer: (A) Yes

39. How do you pass a structure to a function?

(A) By value
(B) By reference
(C) Both A and B
(D) You cannot pass a structure to a function

Correct Answer: (C) Both A and B

40. Which is more memory efficient for storing multiple related data of the same type?

(A) Structure
(B) Array
(C) Union
(D) Both have the same efficiency

Correct Answer: (B) Array

5.2.3 - Nested Structures.

41. What is a nested structure in C?

(A) A structure that contains an array
(B) A structure that contains another structure
(C) A structure with no members
(D) A structure that can be declared without a name

Correct Answer: (B) A structure that contains another structure

42. How do you access a member of a nested structure?

(A) Using the -> operator only
(B) Using the . operator twice
(C) Using the [] operator
(D) Using the & operator

Correct Answer: (B) Using the . operator twice

43. What is the purpose of using nested structures?

(A) To create arrays within structures
(B) To combine related data types into a single structure
(C) To avoid using functions
(D) To simplify variable names

Correct Answer: (B) To combine related data types into a single structure

44. How do you declare a nested structure?

(A) struct outer { struct inner { int a; }; };
(B) struct outer { int a; struct inner; };
(C) struct outer { struct inner { int a; }; inner b; };
(D) struct outer { struct inner; };

Correct Answer: (A) struct outer { struct inner { int a; }; };

45. What happens if you access a member of a nested structure that is not initialized?

(A) It prints a default value
(B) It prints garbage value
(C) It causes a segmentation fault
(D) It causes a compile-time error

Correct Answer: (B) It prints garbage value

46. Which operator is used to access members of a nested structure?

(A) []
(B) ->
(C) .
(D) &

Correct Answer: (C) .

47. Can a structure member itself be a nested structure?

(A) Yes
(B) No
(C) Only if it is an array
(D) Only if it is a pointer

Correct Answer: (A) Yes

48. How do you define a nested structure in a function?

(A) You cannot define nested structures in functions
(B) By using the same syntax as outside the function
(C) By using an array inside the structure
(D) By declaring the nested structure first

Correct Answer: (B) By using the same syntax as outside the function

49. How can you initialize a nested structure?

(A) struct outer o = {1, {2}};
(B) struct outer o = {1, 2};
(C) struct outer o; o.inner = 2;
(D) struct outer o; o.inner.a = 2;

Correct Answer: (A) struct outer o = {1, {2}};

50. In a nested structure, which keyword is used to define an inner structure?

(A) struct
(B) inner
(C) typedef
(D) union

Correct Answer: (A) struct

51. What is the output of the following code?

            struct emp {
                char name[50];
                struct dept {
                    int sal;
                    char degi[50];
                } d;
            };
            struct emp e = {"Alice", {50000, "Manager"}};
            printf("%s %d", e.name, e.d.sal);

(A) Alice 0
(B) Alice 50000
(C) 0 50000
(D) Manager Alice

Correct Answer: (B) Alice 50000

52. Can a structure contain a pointer to another structure?

(A) Yes
(B) No
(C) Only if it’s a nested structure
(D) Only in dynamic memory

Correct Answer: (A) Yes

53. What is the correct way to declare a variable of a nested structure?

(A) struct outer o;
(B) struct inner i;
(C) struct outer { struct inner; } o;
(D) struct inner o;

Correct Answer: (A) struct outer o;

54. What keyword is used to define a structure?

(A) class
(B) struct
(C) union
(D) typedef

Correct Answer: (B) struct

55. How do you access the designation of an employee in a nested structure?

(A) e.d.degi
(B) e->d.degi
(C) e.d->degi
(D) e->d->degi

Correct Answer: (A) e.d.degi

56. Which of the following statements is true about nested structures?

(A) They can only contain primitive data types
(B) They can contain arrays and other structures
(C) They cannot contain other structures
(D) They are not allowed in C

Correct Answer: (B) They can contain arrays and other structures

57. What is the size of a structure that contains two int members and one char member?

(A) 4 bytes
(B) 8 bytes
(C) 12 bytes
(D) Depends on the compiler and architecture

Correct Answer: (D) Depends on the compiler and architecture

58. How can you pass a nested structure to a function?

(A) By reference only
(B) By value only
(C) Both by reference and by value
(D) You cannot pass nested structures to functions

Correct Answer: (C) Both by reference and by value

59. How do you declare a structure with a nested structure and an array?

(A) struct outer { struct inner { int a; } b; int arr[10]; };
(B) struct outer { struct inner b; int arr[10]; };
(C) struct outer { int arr[10]; struct inner; };
(D) Both A and B

Correct Answer: (D) Both A and B

60. Can you use a nested structure to represent a complex data type such as a student with courses?

(A) Yes
(B) No
(C) Only if you use arrays
(D) Only if the courses are defined as enums

Correct Answer: (A) Yes

5.2.4 - Array of Structures.

61. What is an array of structures in C?

(A) An array containing basic data types
(B) An array containing similar structure data types
(C) An array containing only one structure type
(D) An array containing dissimilar data types

Correct Answer: (B) An array containing similar structure data types

62. How do you declare an array of structures?

(A) struct name[size];
(B) struct name[];
(C) struct name variable[size];
(D) struct name variable;

Correct Answer: (C) struct name variable[size];

63. Which of the following is true about the members of a structure?

(A) All members must be of the same data type
(B) Members can be of different data types
(C) Members cannot be arrays
(D) Members must be initialized at declaration

Correct Answer: (B) Members can be of different data types

64. What is the output of the following code snippet?

     struct student {
         char name[20];
         int roll;
     };
     struct student s[2] = {{"Alice", 1}, {"Bob", 2}};
     printf("%s", s[0].name);

(A) Bob
(B) Alice
(C) 1
(D) 2

Correct Answer: (B) Alice

65. What does the fflush(stdin) function do in the context of input?

(A) It clears the entire console
(B) It clears the input buffer
(C) It flushes the output buffer
(D) It is not a standard function

Correct Answer: (B) It clears the input buffer

66. What is the purpose of passing structures to functions?

(A) To modify global variables
(B) To enable access to structure members
(C) To create a new structure
(D) To create local copies of structure data

Correct Answer: (B) To enable access to structure members

67. How can you pass a structure to a function by reference?

(A) By using the address of the structure
(B) By using the structure variable directly
(C) By using a pointer to the structure
(D) Both A and C

Correct Answer: (D) Both A and C

68. In the context of structures, what does getch() do?

(A) Reads a character from the standard input
(B) Returns the next character from standard input
(C) Waits for a key press
(D) Both B and C

Correct Answer: (D) Both B and C

69. What will be the output of this code?

                struct stud {
                    char name[20];
                    int roll;
                };
                struct stud s = {"Alice", 1};
                printf("%d", s.roll);

(A) Alice
(B) 1
(C) Roll
(D) Name

Correct Answer: (B) 1

70. How do you access a member of a structure within an array?

(A) array[index].member
(B) array->member
(C) array.member[index]
(D) array[index]->member

Correct Answer: (A) array[index].member

71. Which of the following statements is true about structure members?

(A) They are stored in non-contiguous memory
(B) They can only be of one data type
(C) They can be public or private
(D) They are stored in contiguous memory locations

Correct Answer: (D) They are stored in contiguous memory locations

72. What happens if you try to access an uninitialized member of a structure?

(A) It will return 0
(B) It will cause a compilation error
(C) It will return garbage value
(D) It will return NULL

Correct Answer: (C) It will return garbage value

73. Can a structure contain another structure as a member?

(A) Yes
(B) No
(C) Only if the inner structure is an array
(D) Only if the outer structure is a pointer

Correct Answer: (A) Yes

74. Which of the following is a valid way to declare a structure variable?

(A) struct student s;
(B) struct student;
(C) student s;
(D) struct student s[];

Correct Answer: (A) struct student s;

75. What is a self-referential structure?

(A) A structure that contains an array of itself
(B) A structure that contains a pointer to itself
(C) A structure with no members
(D) A structure containing another structure

Correct Answer: (B) A structure that contains a pointer to itself

76. Which statement about structure members is correct?

(A) They can have private access
(B) They can be static
(C) They are public by default
(D) They cannot be accessed outside the structure

Correct Answer: (C) They are public by default

77. Which function is used to read a string from the standard input?

(A) scanf()
(B) gets()
(C) fgets()
(D) Both B and C

Correct Answer: (D) Both B and C

78. How do you display the entire content of an array of structures?

(A) By using a single printf statement
(B) By using a loop to access each member
(C) By using a pointer
(D) You cannot display arrays of structures

Correct Answer: (B) By using a loop to access each member

79. What happens when a structure is passed by value to a function?

(A) The original structure is modified
(B) A copy of the structure is created
(C) Memory is not allocated
(D) It causes a runtime error

Correct Answer: (B) A copy of the structure is created

80. Which of the following is an advantage of using structures?

(A) They increase the complexity of the code
(B) They allow grouping of related data
(C) They can only store one type of data
(D) They do not allow nesting

Correct Answer: (B) They allow grouping of related data

5.2.5 - Passing Structures as Arguments in Functions.

81. What happens when a structure variable is passed to a function in C?

(A) The original structure is modified
(B) A copy of the structure is passed to the function
(C) The function cannot access the structure
(D) It causes a compilation error

Correct Answer: (B) A copy of the structure is passed to the function

82. How do you define a structure in C?

(A) struct name{...};
(B) struct name;
(C) name struct{...};
(D) struct name[];

Correct Answer: (A) struct name{...};

83. In the given program, what is the type of the member "name" in the "student" structure?

(A) char
(B) char[]
(C) char *
(D) string

Correct Answer: (C) char *

84. What does the display() function do in the provided code?

(A) Modifies the structure members
(B) Displays the structure member values
(C) Returns a modified structure
(D) Accepts multiple structures

Correct Answer: (B) Displays the structure member values

85. Which operator is used to access the members of a structure?

(A) ->
(B) .
(C) *
(D) &

Correct Answer: (B) .

86. How can you ensure that a pointer to a character in a structure points to valid memory?

(A) By assigning a literal string
(B) By using dynamic memory allocation
(C) Both A and B
(D) It cannot be done

Correct Answer: (C) Both A and B

87. In the function call display(o);, what does o represent?

(A) A pointer to a structure
(B) The structure itself
(C) The address of the structure
(D) A function

Correct Answer: (B) The structure itself

88. What will be the output of the given program?

            struct student {
                char *name;
                int age;
                float per;
            };
            struct student o = {"RAM", 25, 75.5};
            display(o);

(A) Name: 25, Age: RAM, Percent: 75.5
(B) Name: RAM, Age: 25, Percent: 75.5
(C) Name: RAM, Age: 75.5, Percent: 25
(D) None of the above

Correct Answer: (B) Name: RAM, Age: 25, Percent: 75.5

89. What does the return 0; statement indicate in the main() function?

(A) The program has errors
(B) The program completed successfully
(C) The program is still running
(D) The program is terminating

Correct Answer: (B) The program completed successfully

90. If the structure is modified in the display() function, what happens to the original structure in the main() function?

(A) It is modified
(B) It remains unchanged
(C) It will cause a runtime error
(D) It will be deleted

Correct Answer: (B) It remains unchanged

91. What is the purpose of using a pointer for the "name" member in the structure?

(A) To save memory
(B) To allow dynamic allocation of memory
(C) To avoid copying large strings
(D) All of the above

Correct Answer: (D) All of the above

92. Which of the following statements is true about passing structures to functions?

(A) Structures are passed by reference by default
(B) Structures are passed by value by default
(C) Structures cannot be passed to functions
(D) Functions can only accept primitive data types

Correct Answer: (B) Structures are passed by value by default

93. Can a function return a structure in C?

(A) Yes
(B) No
(C) Only if it’s a pointer
(D) Only if the structure has less than 5 members

Correct Answer: (A) Yes

94. What is the output of the following code snippet?

            struct student {
                char *name;
                int age;
                float per;
            };
            struct student o = {"Alice", 22, 88.5};
            printf("%s", o.name);

(A) Alice
(B) 22
(C) 88.5
(D) None of the above

Correct Answer: (A) Alice

95. What will happen if you try to print an uninitialized pointer member in a structure?

(A) It will print NULL
(B) It will cause a segmentation fault
(C) It will print garbage value
(D) It will print an empty string

Correct Answer: (C) It will print garbage value

96. What does the printf() function do in the display() function?

(A) Reads input from the user
(B) Displays output to the console
(C) Allocates memory for the structure
(D) Returns a value from the function

Correct Answer: (B) Displays output to the console

97. How do you pass a structure to a function by reference?

(A) By using the structure variable
(B) By using a pointer to the structure
(C) By using the address of the structure
(D) Both B and C

Correct Answer: (D) Both B and C

98. Which of the following correctly defines a structure in C?

(A) struct name {int a; float b;};
(B) struct name(int a, float b);
(C) name struct {int a; float b;};
(D) struct name: {int a; float b;};

Correct Answer: (A) struct name {int a; float b;};

99. What is the effect of using void display(struct student o) instead of void display(struct student *o)?

(A) The original structure can be modified
(B) The original structure cannot be modified
(C) It will cause a compilation error
(D) It will cause a segmentation fault

Correct Answer: (B) The original structure cannot be modified

100. Which of the following is NOT a valid way to declare a structure variable?

(A) struct student o;
(B) struct student *o;
(C) struct student o[10];
(D) student o;

Correct Answer: (D) student o;

5.2.6 - Typedef.

101. What is the purpose of the typedef keyword in C?

(A) To create a new variable
(B) To provide existing data types with meaningful names
(C) To declare functions
(D) To allocate memory

Correct Answer: (B) To provide existing data types with meaningful names

102. How do you define a new alias for an existing data type using typedef?

(A) typedef alias_name existing_name;
(B) typedef existing_name alias_name;
(C) typedef existing_name as alias_name;
(D) alias_name typedef existing_name;

Correct Answer: (B) typedef existing_name alias_name;

103. Which of the following correctly defines an alias for unsigned int as unit?

(A) typedef unsigned int unit;
(B) typedef unit unsigned int;
(C) unsigned int typedef unit;
(D) unsigned int unit;

Correct Answer: (A) typedef unsigned int unit;

104. What is the output of the following code?

typedef struct {
                int x;
                int y;
            } point;
            point p = {10, 20};
            printf("%d %d", p.x, p.y);

(A) 10 20
(B) 0 0
(C) Compilation error
(D) 20 10

Correct Answer: (A) 10 20

105. What does typedef struct students { ... } stu; achieve?

(A) It creates a structure called students.
(B) It creates an alias stu for the structure students.
(C) It defines a function stu.
(D) It declares a variable stu.

Correct Answer: (B) It creates an alias stu for the structure students.

106. In the statement typedef int* ptr;, what does ptr represent?

(A) A function
(B) A data type
(C) A pointer to an integer
(D) An array of integers

Correct Answer: (C) A pointer to an integer

107. How can typedef improve code readability when using structures?

(A) By shortening the code
(B) By avoiding the use of struct repeatedly
(C) By changing the data type
(D) By defining functions

Correct Answer: (B) By avoiding the use of struct repeatedly

108. What is the output of the following code snippet?

typedef int Arr[4];
            Arr temp = {1, 2, 3, 4};
            printf("%d", temp[2]);

(A) 1
(B) 2
(C) 3
(D) 4

Correct Answer: (C) 3

109. Which statement is true about typedef compared to #define?

(A) typedef can define constants, while #define cannot.
(B) typedef can create new types, while #define cannot.
(C) typedef requires a semicolon at the end, while #define does not.
(D) All of the above

Correct Answer: (D) All of the above

110. Which of the following is NOT a valid use of typedef?

(A) typedef int x;
(B) typedef int y[5];
(C) typedef struct { int a; } z;
(D) typedef #define MAX 100;

Correct Answer: (D) typedef #define MAX 100;

111. What is the main difference between typedef and #define?

(A) typedef is for defining constants, while #define is for data types.
(B) typedef defines data types, while #define defines constants.
(C) There is no difference; they are interchangeable.
(D) typedef requires arguments, while #define does not.

Correct Answer: (B) typedef defines data types, while #define defines constants.

112. How would you declare a pointer to a structure using typedef?

(A) typedef struct { ... } *ptr;
(B) typedef struct { ... } ptr;
(C) typedef struct { ... } &ptr;
(D) typedef struct *ptr;

Correct Answer: (A) typedef struct { ... } *ptr;

113. What is the output of the following code?

typedef int* ptr;
            ptr p1, p2;
            int x = 10;
            p1 = &x;
            printf("%d", *p1);

(A) 10
(B) 0
(C) Compilation error
(D) Undefined behavior

Correct Answer: (A) 10

114. When using typedef with arrays, what does it allow you to do?

(A) Create multiple array types
(B) Declare multiple variables of the same type in one line
(C) Allocate memory for arrays
(D) None of the above

Correct Answer: (B) Declare multiple variables of the same type in one line

115. How would you declare an array of 10 integers using typedef?

(A) typedef int arr[10];
(B) typedef int[10] arr;
(C) typedef arr int[10];
(D) int arr[10];

Correct Answer: (A) typedef int arr[10];

116. Which statement about typedef is FALSE?

(A) It can simplify complex declarations.
(B) It can create type aliases.
(C) It can be used to define constants.
(D) It can improve code readability.

Correct Answer: (C) It can be used to define constants.

117. Can you use typedef to create an alias for a function pointer?

(A) Yes
(B) No
(C) Only in C++
(D) Only for specific data types

Correct Answer: (A) Yes

118. What will happen if you do not include a semicolon at the end of a typedef declaration?

(A) It will compile successfully
(B) It will cause a syntax error
(C) It will be ignored
(D) It will create a default type

Correct Answer: (B) It will cause a syntax error

119. Which of the following is a valid definition of a typedef for a function that returns an integer and takes two integers as arguments?

(A) typedef int func(int, int);
(B) typedef int (*func)(int, int);
(C) typedef int func(int);
(D) typedef int func[];

Correct Answer: (B) typedef int (*func)(int, int);

120. How do you declare a variable st of type stu, where stu is defined using typedef for a structure?

(A) stu st;
(B) typedef stu st;
(C) struct st;
(D) struct stu;

Correct Answer: (A) stu st;