M1 User-Defined Functions

Question 1

Which of the following function gets the floor of a number?

Group of answer choices

= floor

= Floors

= flooring

= floors

Answer 1

= floor

Question 2

Which of the following is NOT a built-in function?
Group of answer choices

= getScore()

= pow()

= sqrt()

= abs()

Answer 2

= getScore()

Question 3

In C++, from which function the execution of a C++programs starts?
Group of answer choices

= new() function

= start() function

= main() function

= end() function

Answer 3

= main() function

Question 4

A function can be called from another function using its ____________.

Group of answer choices

= return type

= name

= variables

= comment

Answer 4

= name

Question 5

What will you use if you do NOT intended to return value?

Group of answer choices

= void

= const

= static

= int

Answer 5

= void

Question 6

A type of variable inside a function.

Group of answer choices

= Foreign

= Global

= Constant

= Local

Answer 6

= Local

Question 7

Two or more functions having the same name but different argument(s) are known as:
Group of answer choices

= recursive function

= main function

= void function

= overloaded function

Answer 7

= overloaded function

Question 8

When do we define the default values for a function?

Group of answer choices

= When a function is called

= When a function is planned

= When a function is declared

= When the scope of the function is over

Answer 8

= When a function is declared

Question 9

include<iostream></iostream>

What is the output of the following code?

using namespace std;

int fun(int x = 0, int y = 0, int z)

{

return (x + y + z);

}

int main()

{

cout &laquo_space;fun(10);

return 0;

}

Group of answer choices

= Error

= 20

= 10

= 0

Answer 9

= Error

Question 10

An overloaded function must have:
Group of answer choices

= Different return types

= Different types and/or number of arguments

= Different executable statements

= All of the mentioned

Answer 10

= Different types and/or number of arguments

Question 11

What are the advantages of passing arguments by reference?
Group of answer choices

= Changes to parameter values within the function also affects the original arguments

= Less memory is used

= All of the mentioned

= There is need to copy parameter values

Answer 11

= Changes to parameter values within the function also affects the original arguments

Question 12

When two functions with the same name are defined in the same scope, the function is:
Group of answer choices

= Overloaded

= Final

= Static

= Double

Answer 12

= Overloaded

Question 13

In order to return a value from a function you must use:
Group of answer choices

= overload

= return

= parameter

= void

Answer 13

= return

Question 14

What is the default argument of b in the function?

int sum(int a=10, int b, int c=30);

Group of answer choices

= 20

= error

= 10

= 0

Answer 14

= 20

Question 15

How many parameters are there in the function: int add(int a,int b)?
Group of answer choices

= 2

= 4

= 3

= 1

Answer 15

= 2

Question 16

Which of the following is NOT a proper function prototype (definition)?
Group of answer choices

= char x();

= int funct (char x, char y) ;

= double func(char x)

= void funct();

Answer 16

= double func(char x)

Question 17

To execute the codes of function, the user-defined function needs to be __________.
Group of answer choices

= debugged

= defined

= invoked

= saved

Answer 17

= invoked

Question 18

In C++, which of the following is TRUE?
Group of answer choices

= Functions can have no argument and no value

= All of the mentioned

= Function can have no argument but return value

= Function can have no argument but no return value

Answer 18

= All of the mentioned

Question 19

In C++, the block of code begins and ends with:
Group of answer choices

= []

= <>

= ()

= {}

Answer 19

= {}

Question 20

What is the return type of the function with the prototype :

int functionx (char x, char y) ;

Group of answer choices

= double

= int

= char

= boolean

Answer 20

= int

Question 21

The function that returns no value is known as
Group of answer choices

= private function

= static

= void function

= null

Answer 21

= void function

Question 22

It states that the function is a non-returning value function
Group of answer choices

= int

= voided

= void

= double

Answer 22

= void

Question 23

In order to define the absolute value of a number we should use:
Group of answer choices

= absol

= abz

= Absolute

= abs

Answer 23

= abs

Question 24

Which of the following computes for the absolute value for int?
Group of answer choices

= absol

= abs

= fabs

= labs

Answer 24

= abs

Question 25

In a program you saw the following:

int myFunctionTools(int x)

float myFunctionTools(float x)

double myFunctionTools(double x, double y)

What‘s the best description of the given functions?

Group of answer choices

= Functions are overloaded

= Functions have different parameter list

= Functions have different returning value

= Functions have no default values

Answer 25

= Functions have no default values

Question 26

Which of the following returns an integer?
Group of answer choices

= void myInitialGrade(int x)

= int myRoundedGrade(int x)

= double myAverageGrade(double x)

= void myFinalGrade(int x, int y)

Answer 26

= int myRoundedGrade(int x)

Question 27

If the user didn’t supply a value in a function, then what value will it take?
Group of answer choices

= none of the mentioned

= default value

= 0

= rise an error

Answer 27

= default value

Question 28

Where should default parameters appear in a function prototype?
Group of answer choices

= Middle of the parameter list

= To the rightmost side of the parameter list

= Anywhere inside the parameter list

= To the leftmost side of the parameter list

Answer 28

= To the leftmost side of the parameter list

Question 29

include < iostream >

What is the output of the program?

using namespace std;

void fun(int x, int y)

{

x = 20;

y = 10;

}

int main()

{

int x = 10;

fun(x, x);

cout &laquo_space;x;

return 0;

}

Group of answer choices

= 30

= 10

= error

= 20

Answer 29

= 10

Question 30

include <iostream></iostream>

What would be the output of the given program?

using namespace std;
int factorial(int);
int main()
{
int n = 4;
cout &laquo_space;“Factorial is = “ &laquo_space;factorial(4);
return 0;
}
int factorial(int n)
{
if (n > 1)
{
return n*factorial(n-1);
}
else
{
return 1;
}
}

Group of answer choices

= Factorial is = 16

= Factorial is = 24

= Factorial is = 12

= Factorial is = 4

Answer 30

= Factorial is = 24

Question 31

What are the mandatory parts of a function declaration?
Group of answer choices

= None of mentioned

= Return type, function name and parameters

= Parameter

= Return type and function name

Answer 31

= Return type and function name

Question 32

When will we use the function overloading?
Group of answer choices

= Different function name but same number of arguments

= Same function name but same number of arguments

= Same function name but different number of arguments

= Different function name but different number of arguments

Answer 32

= Same function name but different number of arguments

Question 33

An overloaded function must have:
Group of answer choices

= Different executable statements

= Different types and/or number of arguments

= Different return types

= All of the mentioned

Answer 33

= Different types and/or number of arguments

Question 34

A function that calls itself is a __________ function
Group of answer choices

= main

= void

= recursive

= overloaded

Answer 34

= recursive

Question 35

Which of the following is NOT a proper function prototype (definition)?
Group of answer choices

= char letter();

= int secondfunct (char x, char y) ;

= func(int x)

= void funct();

Answer 35

= func(int x)

Question 36

Which of the following is a complete function?
Group of answer choices

= void functCall(int) {cout&laquo_space;“Hello”}

= int functCall (int x) {return x = x+1;}

= int functCall();

= void funcCall(x) {cout«”Hello”}

Answer 36

= int functCall (intx) {return x=x+1}

Question 37

Check the given code:

int add(int a,int b)

                                    {

                                                    int add;

                                                    add = a + b;

                                                    return add;

                                    }

What would be the returning value data type?

Group of answer choices

= boolean

= int

= double

= long

Answer 37

• int

Question 38

include <iostream></iostream>

Complete the code:

using namespace std;

// Print grade for the score
_______ printGrade(double score)
{
if (score >= 90.0)
cout &laquo_space;‘A’;
else if (score >= 80.0)
cout &laquo_space;‘B’;
else if (score >= 70.0)
cout &laquo_space;‘C’;
else if (score >= 60.0)
cout &laquo_space;‘D’;
else
cout &laquo_space;‘F’;
}

int main()
{
cout &laquo_space;“Enter a score: “;
double score;
cin&raquo_space; score;

cout &laquo_space;“The grade is “;
printGrade(score);

return 0;
}

Group of answer choices

= double

= void

= char

= int

Answer 38

= void

Question 39

What is the return value of the following function: double myRewards(double x, double y)?
Group of answer choices

= float

= long

= double

= int

Answer 39

= double

Question 40

What is the default argument of b in the function?

           int sum(int a, int b=10, int c=20);

Group of answer choices

=10

= 0

= error

= 20

Answer 40

= 10

Question 41

In a program you saw the following:

int myFunctionTools(int x)

float myFunctionTools(float x)

double myFunctionTools(double x, double y)

What‘s the best description of the given functions?

Group of answer choices

= Functions have no default values

= Functions have different parameter list

= Functions have different returning value

= Functions are overloaded

Answer 41

= Functions are overloaded

Question 42

Overloaded functions are:
Group of answer choices

= Very long functions that can hardly run

= None of the mentioned

= One function containing another one or more functions inside it

= Two or more functions with the same name but different number of parameters or type

Answer 42

= Two ore more functions with the same name but different number of parameters or type

Question 43

Which of the following returns an integer?
Group of answer choices

double myAverageGrade(double x)

= int myRoundedGrade(int x)

= void myFinalGrade(int x, int y)

= void myInitialGrade(int x)

Answer 43

= int myRoundedGrade(int x)

Question 44

It refers to the information that can be passed to a function
Group of answer choices

= Variable

= Parameter

= Statement

= Syntax

Answer 44

= Parameter

Question 45

How many minimum numbers of functions need to be present in a C++ program?
Group of answer choices

= 1

= 0

= 2

= 3

Answer 45

= 1

Question 46

Which of the following computes for the square root of a number?
Group of answer choices

= square

= abs

= srand

= sqrt

Answer 46

= sqrt

Question 47

Which of the following computes for the power of a given number?
Group of answer choices

= floor

= pow

= power

= fabs

Answer 47

= pow

Question 48

Library functions are also known as _______ function:
Group of answer choices

= Built-in

= User defined

= void

= main

Answer 48

= Built-in

Question 49

How many parameters are there in the function:

int theArea(int a,int b, int c)?

Group of answer choices

= 4

= 1

= 3

= 2

Answer 49

= 3

Question 50

Which of the following function is used to accept user inputs?
Group of answer choices

= return

= round

= cin

= cout

Answer 50

= cin

Question 51

What is a default return type of a function?
Group of answer choices

= char

= double

= int

= void

Answer 51

= int

Question 52

include <iostream></iostream>

What is the output for the given program?

using namespace std;
void f1()
{
cout «1;}
int main()
{
f1();
goto x;
cout &laquo_space;“hello”;
x: cout &laquo_space;“hi”;
return 0;}

Group of answer choices

= 1hi

= hi hello 1

=1 hello

= 1 hello hi

Answer 52

= 1hi