Function C Programming MCQ Quiz- Master C Language 2024

Function C programming MCQ Quiz Basic to Advanced

Test your knowledge of C functions with this multiple-choice quiz! This quiz covers basic function concepts like function prototypes, parameter passing, and return types. Whether you’re a beginner learning C or an experienced programmer looking for a refresher, this quiz is a fun way to challenge yourself.

C programming is the foundation of many software applications, and a strong grasp of its concepts is crucial for aspiring programmers. One fundamental aspect of C programming is understanding functions, as they play a pivotal role in code organization and reusability. In this blog post, we’ll explore multiple-choice questions (MCQs) focused on C programming functions to help you assess and enhance your understanding.

The Challenge: Function Quiz in C Programming

The C Programming Function Quiz is designed to push the boundaries of your knowledge and test your proficiency in working with functions. From the basics of function declaration to advanced concepts like recursion and function pointers, this quiz covers a wide array of topics essential for any C programmer.

C Programming Function MCQ Question Quiz

Test Your Skills: Function C Programming MCQ Quiz - Master the Basics!

Test your knowledge with our SEO-friendly Function C Programming MCQ Quiz! Enhance your understanding of functions in C programming and assess your proficiency with multiple-choice questions. Challenge yourself and level up your coding skills today!

1 / 50

Which of the following is true about function declaration and definition in C?

A) Declaration specifies the function's body, while definition specifies the function's signature

B) Declaration specifies the function's signature, while definition specifies the function's body

C) Declaration and definition are interchangeable terms in C

D) Declaration and definition must occur within the main function

2 / 50

Array are passed as arguments to a function by__________

a. Value

b. Reference

c. Using pointers

d. Both value and reference

3 / 50

Which of the following is true about recursive functions in C?

A) They cannot call themselves

B) They always result in infinite loops

C) They call themselves directly or indirectly

D) They can only return void

4 / 50

Scanf function is used to________

a. Reading values from the keyboard

b. Initilizing variables

c. Printing the values to the console

d. Accepting a string

5 / 50

Arguments to functions always appear within __________.

a) brackets

b) parentheses

c) curly braces

d) quotation marks

6 / 50

Which of the following is not a valid function name in C?

A) my_function

B) _function

C) 123function

D) function_123

7 / 50

The default parameter passing mechanism is

A. Call by value

B. call by reference

C. call by value result

D. None

8 / 50

Which keyword is used to return a value from a function in C?

A) break

B) continue

C) return

D) exit

9 / 50

C program much contain atleast

A) 2 functions

B) 1 functions

C) 0 functions

D) n number of functions

10 / 50

10.

What is the purpose of the "auto" keyword in a function parameter list?

A) It specifies that the parameter is stored in a register

B) It specifies that the parameter cannot be modified within the function

C) It specifies that the parameter must be initialized with a constant value

D) It specifies that the parameter is automatically initialized to zero

11 / 50

11.

What can happen if you forget to return a value from a function that has a return type?

- (a) The function will still execute correctly.

- (b) The compiler will automatically return a specific value.

- (c) You may get undefined behavior in your program.

- (d) It only affects functions using pointers.

12 / 50

12.

What is the primary purpose of header files in C, related to functions?

(a) To store function definitions and allow sharing across program files.

(b) To declare prototypes and enforce type checking during compilation.

(d) All of the above

13 / 50

13.

A variable defined outside a function is referred to as

a) a global variable

b) a function variable

c) a block variable

d) a local variable

14 / 50

14.

What happens when a function is called in C?

a) The program terminates

b) Control transfers to the function

c) Control transfers to the main function

d) Nothing happens

15 / 50

15.

Functions can return structure in c?

A. TRUE

B. FALSE

C. May Be

D. Can't Say

16 / 50

16.

What is the correct way to declare a function pointer in C?

(a) return_type (*function_name)(parameter_list);

(b) function_name (*parameter_list);

(d) There's no such concept as function pointers in C.

17 / 50

17.

What is the purpose of the return type in a function declaration?

A) It specifies the number of parameters the function takes

B) It indicates the type of data the function returns

C) It specifies the memory allocation for the function

D) It determines the function's visibility in the program

18 / 50

18.

Which of the following accurately describes a function declaration?

(a) Defines the function's body and implementation

(b) Specifies the function's name, return type, and parameters

(d) Neither (a) nor (b)

19 / 50

19.

What is the purpose of the "sizeof" operator in a function declaration?

A) It specifies the size of the return value

B) It specifies the size of the function body

C) It specifies the size of the function parameters

D) It specifies the size of a variable or data type

20 / 50

20.

Which of the following is true about function recursion in C?

A) Recursion is not allowed in C functions

B) Recursion requires the use of loops

C) Recursion allows a function to call itself

D) Recursion can only be achieved with function pointers

21 / 50

21.

Which of the statements is false with respect to structure and functions?

a. The general format of sending a copy of a structure to the called function is function name(structure variable name)

b. The called function must be declared for its type, appropriate to the data types it is expected to return.

c. The structure variable used as the actual argument and the corresponding formal argument in the called function must be of the same struct type.

d. when a function returns a structure, it is not necessary that it must be assigned to a structure of identical type in the calling function.

22 / 50

22.

What is the term used for passing arguments to a function?

(a) Accessing

(b) Referencing

(d) Evaluating

23 / 50

23. What is the purpose of the "static" keyword in a function declaration?

A) It restricts the function's scope to the current source file

B) It specifies that the function cannot be called recursively

C) It allows the function to access global variables

D) It prevents the function from being optimized by the compiler

24 / 50

24.

Which of the following is not a valid data type for a function return value in C?

A) int

B) char

C) array

D) float

25 / 50

25.

The starting point for the execution of a program is __

(A) Class

(B) Public

(D) Main()

26 / 50

26. What is the difference between pre-increment and post-increment operators within a function argument?

(a) They have no effect on function arguments, as changes are local.

(b) Pre-increment modifies the original variable before passing, while post-increment does it after.

c) Only pre-increment can be used with function arguments, as post-increment is prohibited

d) Both have the same effect, as argument passing copies the value regardless of operators.

27 / 50

27.

A function cannot be defined inside another function

A. True

B. False

28 / 50

28.

What is the primary purpose of using functions in C programs?

(a) Modularize code and improve readability

(b) Share code across different programs

(d) All of the above

29 / 50

29.

What is the return type of a function that doesn't return any value?

a) void

b) int

c) float

d) char

30 / 50

30.

What is the default mechanism for passing arguments in C?

(a) Call by value

(b) Call by reference

(d) None of the above

31 / 50

31.

In the C language 'a’ represents

a) a digit

b) an integer

c) a character

d) a word

32 / 50

32.

Choose the correct option about function

A) "main" is the name of default must and should Function.

B) main() is same as int main()

c) By default, return 0 is added as the last statement of a function without specific return type.

d) All of the above

33 / 50

33.

Which of the following holds (s) and advantage of using macros over functions?

a. functions must have parameters; macros do no.

c. Values passed to functions must be of a specific data type; values passed to macros do not.

d. when macros are used many times in a program they are expanded each time.

34 / 50

34.

Functions can be called either by value or reference

A. True

B. False

35 / 50

35.

What is the purpose of the "return" statement in a function?

A) To terminate the function execution

B) To return a value to the calling function

C) To print output to the console

D) To declare a variable

36 / 50

36.

Which one of the statements is not valid

a. The stract()function is used to concatenate the two string.

b. The strcmp()function is used to compare the two string.

c. strcpy()function determines the length of the string

d. All of the above

37 / 50

37.

What is a function in C programming?

A) A keyword used to define variables

B) A block of code that performs a specific task

C) A data type used to store characters

D) A method to declare global variables

38 / 50

38.

What is the correct way to pass an array to a function in C?

A) By using a pointer

B) By passing individual array elements

C) By passing the array size

D) By passing the array name

39 / 50

39. What is the main difference between call by value and call by reference in C?

(a) Call by value passes a copy of the argument, while call by reference passes the memory address.

(b) Call by value is faster, while call by reference is slower.

c) Call by value is used for primitive types, while call by reference is used for arrays and structures.

(d) Both (a) and (b) are true.

40 / 50

40.

Which of the following is true about function prototypes in C?

A) They are optional

B) They must be declared after the main function

C) They provide a way to declare the function signature

D) They are defined inside the main function

41 / 50

41.

What is recursion in C, and what is its potential drawback?

(a) A function calling itself; possible stack overflow if not used carefully

(b) A way to pass arguments indirectly; limited efficiency for large inputs

(d) A technique for iterating through arrays; can be more complex than loops

42 / 50

42.

Point out the illegal function declaration

int 2bhk(int*, int []);

int 1bhk(int a);

int 1bhk(int);

All of the above

43 / 50

43.

The keyword used to transfer control from a function back to the calling function is

A. Switch

B. Goto

C. Go Back

D. Return

44 / 50

44.

What does the "void" keyword in a function declaration mean?

A) The function does not return any value

B) The function accepts no parameters

C) The function is not defined

D) The function is declared globally

45 / 50

45.

What is the scope of a local variable declared inside a function?

A) It is accessible only within the function

B) It is accessible anywhere in the program

C) It is accessible only within the main function

D) It is accessible only within other functions

46 / 50

46.

Input/output function prototypes and macros are defined in which header file?

a. conio.h

b. stdlib.h

c. stdio.h

d. dos.h

47 / 50

47.

What is the syntax for calling a function in C?

A) function_name;

B) function_name();

C) function_name[];

D) function_name{};

48 / 50

48.

The getchar () function reads a_______

a. String from a file

b. Character from a file

c. String from the keyboard

d. Character from the keyboard

49 / 50

49.

The putchar ()function prints a_________

a. String to a file

b. Character to a file

c. Character to console

d. String to console

50 / 50

50.

What is the purpose of the "extern" keyword in a function declaration?

A) It specifies that the function is defined externally

B) It specifies that the function is static

C) It restricts the function's scope to the current source file

D) It prevents the function from being accessed by other source files

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Conclusion:

These questions cover various aspects of C programming functions, including function prototypes, recursion, parameter passing, and function modifiers. Mastering these concepts is essential for becoming proficient in C programming and laying a solid foundation for more advanced topics.

Remember, practice and perseverance are key to mastering any programming language. Happy coding!

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