Module 5

Question 1

If none of the conditions is true in an if-ladder then the final else statement will be executed.

Answer 1

True

Question 2

Which program structure is used to repeat a set of statements?

Answer 2

repetition

Question 3

The switch case is a clean and efficient method of handling the complexity of using lengthy if-ladder structure.

Answer 3

True

Question 4

Break statements are used when you want your program-flow to come out of the switch body.

Answer 4

True

Question 5

When the variable being switched on is equal to a case, the statements following that case will execute until a break statement is reached.

Answer 5

True

Question 6

A switch construct can be used with which of the following types of variables.

• int, float, char
• int
• int, char
• Any basic datatype

Answer 6

int, char

Question 7

Nested switch statements should be avoided as it makes program more complex and less readable.

Answer 7

True

Question 8

When C++ reaches a break keyword, it continues to test other cases.

Answer 8

False

Question 9

Whether the indentation exists or not, the compiler will, by default, associate an else with the closest previous unpaired if.

Answer 9

True

Question 10

The constant-expression for a case must be of different data type as the variable in the switch.

Answer 10

False

Question 11

Whenever a break statement is encountered in the switch body, the execution flow would directly come out of the switch, ignoring rest of the cases

Answer 11

True

Question 12

When you have the default keyword in your switch, you are required to place a break statement.

Answer 12

False

Question 13

If one of the conditions in an if-ladder true, the statement associated with that if is executed, and continue testing the conditions in the rest of the ladder.

Answer 13

False

Question 14

Which of the following can replace a simple if-else construct?

• ternary operator
• do-while loop
• for loop
• while loop

Answer 14

ternary operator

Question 15

How many choices are possible when using a switch case statement?

Answer 15

1 or more

Question 16

In switch, the value of the expression is compared with the values of each case.

Answer 16

True

Question 17

In switch if there is a match, the associated block of code is executed

Answer 17

True

Question 18

The default keyword must be used as the last statement in the switch.

Answer 18

True

Question 19

Switch case statement is used when you only have one condition.

Answer 19

False

Question 20

If no break appears, the flow of control will fall through to subsequent cases until a break is reached

Answer 20

True

Question 21

The default case can be used for performing a task when none of the cases is true

Answer 21

True

Question 22

The break statement causes an exit ________

Answer 22

from the innermost loop or switch.

Question 23

Which of the following is not true about switch statement?

• The constant-expression for a case must be the same data type as the variable in the switch
• When a break statement is reached, the flow of control will fall through to subsequent cases until a break is reached.
• A switch statement allows a variable to be tested for equality against a list of values
• The expression used in a switch statement must have an integral or enumerated type.

Answer 23

When a break statement is reached, the flow of control will fall through to subsequent cases until a break is reached.

Question 24

A switch statement allows a variable to be tested for inequality against a list of values

Answer 24

False

Question 25

Which of the following must be present in the switch construct?

Answer 25

Expression in ( ) after switch

Question 26

The constant-expression for a case may be a floating point number.

Answer 26

False

Question 27

Nesting of switch statements is not allowed, which means you can have switch statements inside another switch.

Answer 27

False

Question 28

To make the multiple statements become compound statement, enclosed the statements with brackets [].

Answer 28

False

Question 29

Program control structure in which statements are performed next based on a condition is selection.

Answer 29

True

Question 30

Each case is followed by the value to be compared to and a semicolon.

Answer 30

False

Question 31

Which of the following is not a program control structure?

Answer 31

instantiation

Question 32

A break can save a lot of execution time because it "ignores" the execution of all the rest of the code in the switch block.

Answer 32

True

Question 33

Whenever a default keyword is encountered in the switch body, the execution flow would directly come out of the switch, ignoring rest of the cases

Answer 33

False

Question 34

If one of the conditions in an if-ladder true, the statement associated with that if is executed, and does not continue testing the conditions in the rest of the ladder.

Answer 34

True

Question 35

The constant-expression for a case may be a string or float data type as the variable in the switch.

Answer 35

False

Question 36

The compiler by default associates an else with the closest previous unpaired if whether the indentation exists or not.

Answer 36

True

Question 37

The break statement causes an exit from the innermost loop or switch.

Answer 37

True