Functions and Procedures in C++ MCQ question and answer with solution

11.
What is the output of the following code: int square(int x) { return x * x; } int main() { cout << square(3) + square(2); } in C++?

A. 13

B. 25

C. 12

D. Compilation error due to mismatched return types

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12.
What is the correct syntax for defining a recursive function in C++?

A. returnType functionName(parameters) { functionName(parameters); }

B. returnType functionName(parameters) { functionName(); }

C. functionName(parameters) { return functionName(parameters); }

D. None of the above

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13.
What is the purpose of a function header in C++?

A. Contains the actual code of the function

B. Specifies the function's location in memory

C. Declares the name, return type, and parameters of the function

D. Provides default arguments for the function

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14.
What will be the output of the following code: int max(int a, int b) { return (a > b) ? a : b; } cout << max(5, 3); in C++?

A. max(5, 3)

B. 3

C. Compilation error due to missing function definition

D. max(3, 5)

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15.
Which of the following is true about function recursion in C++?

A. Recursion can only be achieved through function pointers

B. Recursion is limited to predefined standard functions

C. A function calling itself directly or indirectly

D. Recursion is not allowed in C++

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16.
What is the purpose of a function in C++?

A. To declare variables

B. To print output

C. To initialize memory

D. To perform a specific task

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17.
Which of the following is true about function parameters in C++?

A. They are variables used to pass data into functions

B. They are placeholders for function names

C. They are used to return values from functions

D. They are only used in main functions

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18.
What is the correct way to declare a function in C++ that takes no parameters and returns an integer?

A. void functionName();

B. functionName(int);

C. functionName() int;

D. int functionName();

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19.
What is the purpose of the 'void' keyword in a function declaration in C++?

A. Indicates that the function accepts no parameters

B. Indicates that the function returns a void pointer

C. Indicates that the function does not return a value

D. Indicates that the function is a member function

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20.
What is the output of the following code: int multiply(int x, int y) { return x * y; } int main() { cout << multiply(3, 4); } in C++?

A. multiply(3, 4)

B. 12

C. Compilation error due to missing return statement

D. multiply(4, 3)

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Functions and Procedures in C++ MCQ question and answer with solution | C++ Programimg MCQs

11. What is the output of the following code: int square(int x) { return x * x; } int main() { cout << square(3) + square(2); } in C++?

Answer & Solution

12. What is the correct syntax for defining a recursive function in C++?

Answer & Solution

13. What is the purpose of a function header in C++?

Answer & Solution

14. What will be the output of the following code: int max(int a, int b) { return (a > b) ? a : b; } cout << max(5, 3); in C++?

Answer & Solution

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

Answer & Solution

16. What is the purpose of a function in C++?

Answer & Solution

17. Which of the following is true about function parameters in C++?

Answer & Solution

18. What is the correct way to declare a function in C++ that takes no parameters and returns an integer?

Answer & Solution

19. What is the purpose of the 'void' keyword in a function declaration in C++?

Answer & Solution

20. What is the output of the following code: int multiply(int x, int y) { return x * y; } int main() { cout << multiply(3, 4); } in C++?

Answer & Solution

Read More Section(Functions and Procedures in C plus plus)

11.
What is the output of the following code: int square(int x) { return x * x; } int main() { cout << square(3) + square(2); } in C++?

12.
What is the correct syntax for defining a recursive function in C++?

13.
What is the purpose of a function header in C++?

14.
What will be the output of the following code: int max(int a, int b) { return (a > b) ? a : b; } cout << max(5, 3); in C++?

15.
Which of the following is true about function recursion in C++?

16.
What is the purpose of a function in C++?

17.
Which of the following is true about function parameters in C++?

18.
What is the correct way to declare a function in C++ that takes no parameters and returns an integer?

19.
What is the purpose of the 'void' keyword in a function declaration in C++?

20.
What is the output of the following code: int multiply(int x, int y) { return x * y; } int main() { cout << multiply(3, 4); } in C++?