Question 1

What is a function in C++?

Accepted Answer

A group of statements performing a task

Answer

A code declaration

Answer

A data type

Answer

A loop structure

Question 2

Which function is mandatory in every C++ program?

Accepted Answer

main()

Answer

execute()

Answer

begin()

Answer

start()

Question 3

What does a function declaration in C++ consist of?

Accepted Answer

Function name and return type

Answer

Function parameters only

Answer

Function body and parameters

Answer

Function name and body

Question 4

What keyword is used for functions that do not return a value in C++?

Accepted Answer

void

Answer

double

Answer

int

Answer

char

Question 5

Which of the following is NOT a part of a function definition in C++?

Accepted Answer

Function call

Answer

Return type

Answer

Parameters

Answer

Function name

Question 6

How are function parameters passed in C++ by default?

Accepted Answer

Call by value

Answer

Call by reference

Answer

Call by name

Answer

Call by pointer

Question 7

What is the purpose of a function declaration in C++?

Accepted Answer

To call the function

Answer

To define the return body

Answer

To tell the compiler about the function name and how to call it

Answer

To declare variables

Question 8

Which function is used to concatenate two strings in C++?

Accepted Answer

strcat()

Answer

memcpy()

Answer

strcpy()

Answer

strcat_s()

Question 9

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

Accepted Answer

return_type function_name(parameter list) {function body}

Answer

function_name {function body}

Answer

function_name return_type(parameter list) {function body}

Answer

return_type function_name {function body}

Question 10

How are changes made to parameters inside a function affected when using call by value?

Accepted Answer

They have no effect on the argument passed to the function

Answer

They create a new argument

Answer

They generate a compilation error

Answer

They affect the argument passed to the function

Question 11

What is the purpose of a function body in C++?

Accepted Answer

To define what the function does

Answer

To define function parameters

Answer

To declare variables

Answer

To define the return type

Question 12

Which method of copies the reference in C++ allows changes made to parameters inside a function to affect the argument?

Accepted Answer

Call by reference

Answer

Call by pointer

Answer

Call by name

Answer

Call by value

Question 13

What is the function signature in C++?

Accepted Answer

Function name

Answer

Function body

Answer

Return type

Answer

Function name and parameter list

Question 14

What happens when a function is called in C++?

Accepted Answer

Program control is transferred to the called function

Answer

The function is defined and executed

Answer

The program stops execution

Answer

The main function is invoked

Question 15

What does a function declaration include in C++?

Accepted Answer

Function name, parameter list, and return type

Answer

Function name

Answer

Function body and parameters

Answer

Function parameters only

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