Module 4

Question 1

The &laquo_space;symbol used for displaying the output is known as the _______ operator

Answer 1

insertion

Question 2

It is commonly known as the output operator.

Answer 2

Insertion operator

Question 3

Multiple insertion operations («) may be chained in a _____ statement

Answer 3

single

Question 4

The operator used for taking the input is known as the _________.

Answer 4

extraction

Question 5

Which of the following escape sequences represents the horizontal tab?

Answer 5

\t

Question 6

Which library is used for basic input-output library in this program?

Answer 6

iostream

Question 7

What two functions will not work when we remove the iostream header file?

Answer 7

cin and cout

Question 8

The function used to round the value toward zero and returns the nearest integral value.

Answer 8

trunc ( )

Question 9

The sets the decimal precision to be used to format floating-point values on output operations is __________.

Answer 9

setprecision

Question 10

Which implicit conversion is not possible?

Answer 10

float to int

Question 11

To use the functions pow() and sqrt(), what should be included in the preprocessor directive part of the C++ program?

Answer 11

math.h

Question 12

________ type conversion is a conversion performed by the compiler without the programmer’s intervention.

Answer 12

Implicit

Question 13

The standard output by default is the screen, and the C++ stream object defined to access it is

Answer 13

cout

Question 14

What is the process of converting one predefined type into another?

Answer 14

Type casting

Question 15

Which is a valid typecast?

Answer 15

(char)a;

Question 16

Which header file do you need to include to use typecasting?

Answer 16

None

Question 17

Which of the following is not true in implicit type conversion?

Answer 17

It is a force type conversion

Question 18

We can perform implicit type conversion on: ____________

Answer 18

Converting char to int

Question 19

How many parameters are used in floor() function?

Answer 19

1

Question 20

Given: string name = “Jayar”; What header is needed to be declared to be able to output the content of the string type variable name?

Answer 20

string

Question 21

If there is a chained multiple extraction operators (») in cin, the inputted values separated by space/s are stored in the variables respectively.

Answer 21

True

Question 22

To insert a line break, a new-line character shall be inserted at the exact position the line should be broken.

Answer 22

True

Question 23

Integer is larger than float data type in size.

Answer 23

False

Question 24

What is type casting?

Answer 24

Converting one data type into another

Question 25

______ type conversion requires a type casting operator.

Answer 25

Explicit

Question 26

The function accepts an integer value and returns an integer value that has the same magnitude but positive sign.

Answer 26

Abs ( )

Question 27

Converting larger data type into smaller one is _______ type conversion.

Answer 27

Explicit

Question 28

The "<<" symbol used in cout statement is called ______.

Answer 28

Insertion operator

Question 29

In ________ type conversion, if the operands are of two different data types, then an operand having lower data type is automatically converted into a higher data type

Answer 29

Implicit

Question 30

round() is used to round the given number to the closest highest integer.

Answer 30

False

Question 31

setprecision when used along with ‘_____’ provides precision to floating point numbers correct to decimal numbers mentioned in the brackets of the setprecision.

Answer 31

fixed

Question 32

What can be used to input a string with blank spaces?

Answer 32

getline( )

Question 33

Converting larger data type into smaller one is implicit type conversion.

Answer 33

False

Question 34

When constants and variables of different types are mixed in an expression, they are converted to the same type.

Answer 34

True

Question 35

The function that takes a single argument and returns the absolute value of that number in double.

Answer 35

fabs( )

Question 36

Explicit type of type conversion is also called as standard type conversion.

Answer 36

False

Question 37

The standard ______ by default is the keyboard.

Answer 37

input

Question 38

The extraction operator will extract characters from the keyboard until you didn’t press _____ key.

Answer 38

enter

Question 39

Why can typecasting be dangerous?

Answer 39

You might temporarily lose part of the data - such as truncating a float when typecasting to an int.

Question 40

The _____ functions maps a real number to the greatest preceding integer.

Answer 40

floor