Conditional Statements: Master Decision Making in Programming

Question 1

What is the primary purpose of an if-else statement?

Accepted Answer

To execute specific code based on a given condition

Answer

To execute code repeatedly based on a condition being met

Answer

To control program flow based on user input

Answer

To terminate program execution based on a condition

Question 2

What is the key difference between if and if-else statements?

Accepted Answer

If statements execute code if a condition is met, while if-else statements execute code based on whether a condition is met or not.

Answer

If statements execute code only if a condition is met, while if-else statements always execute code.

Answer

If statements are used for simple conditions, while if-else statements are used for more complex conditions.

Answer

There is no difference between if and if-else statements.

Question 3

Which symbol represents the equality comparison operator in conditional statements?

Accepted Answer

==

Answer

=

Answer

>

Answer

<

Question 4

What is the main difference between a logical AND operator and a logical OR operator?

Accepted Answer

The AND operator is true when both conditions are true, while the OR operator is true when either condition is true.

Answer

The OR operator is true when both conditions are true, while the AND operator is true when either condition is true.

Answer

AND has higher precedence than OR in operator evaluation.

Answer

OR has higher precedence than AND in operator evaluation.

Question 5

When is it appropriate to use a nested if statement?

Accepted Answer

When evaluating complex conditions requiring multiple levels of checks

Answer

When wanting to avoid using switch-case statements

Answer

When needing to execute a block of code multiple times

Answer

When terminating program execution

Question 6

What is the primary purpose of a ternary operator?

Accepted Answer

To provide a concise conditional statement.

Answer

To define a new data type.

Answer

To iterate through a list.

Answer

To handle exceptions.

Question 7

Which of the following is the correct syntax of an if-else statement in C#?

Accepted Answer

if (condition) { code } else { code }

Answer

if (condition) : { code } else : { code }

Answer

if (condition) => { code } else => { code }

Answer

if (condition) ... { code } else ... { code }

Question 8

What is the purpose of the switch-case statement?

Accepted Answer

To execute specific code depending on the value of a variable

Answer

To iterate over a range of values

Answer

To handle exceptions

Answer

To define constants

Question 9

What is the key difference between an if-else statement and a switch-case statement?

Accepted Answer

If-else checks for a single condition, while switch-case checks for multiple conditions.

Answer

Switch-case is more efficient than if-else.

Answer

If-else can only be used with numeric variables, while switch-case can be used with any data type.

Answer

There is no difference between the two statement types.

Question 10

Which of the following is a valid use of the break statement in a switch-case statement?

Accepted Answer

To exit the switch-case statement and continue with the program

Answer

To skip the execution of the next case block

Answer

To execute the default case block

Answer

To define a constant

Question 11

What is the purpose of the default case in a switch-case statement?

Accepted Answer

To handle cases that don't match any of the other cases

Answer

To execute the first case block

Answer

To exit the switch-case statement

Answer

To define a constant

Question 12

What is the result of the following expression: True && False

Accepted Answer

False

Answer

True

Answer

Error

Answer

Null

Question 13

In Java, which keyword is used to initiate an if statement?

Accepted Answer

if

Answer

for

Answer

while

Answer

switch

Question 14

What is the primary purpose of the else statement used in conjunction with if statements?

Accepted Answer

To execute code when the condition of the if statement is false.

Answer

To execute code only if the condition of the if statement is true.

Answer

To define a new variable.

Answer

To end an if statement.

Question 15

Which of these is NOT a typical use for a switch-case statement in Java?

Accepted Answer

Evaluating complex logical conditions

Answer

Responding to menu choices from a user

Answer

Directing program flow based on user input

Question 16

Which of the following correctly represents the syntax for an if statement in Python?

Accepted Answer

if (condition):

Answer

while (condition):

Answer

for (condition in range(n)):

Question 17

In an if statement, what is the intended purpose of the else statement?

Accepted Answer

To execute a block of code when the condition of the if statement evaluates to false.

Answer

To terminate the execution of the if statement.

Answer

To execute a block of code when the condition of the if statement evaluates to true.

Question 18

In a switch-case statement, what is the role of the break statement?

Accepted Answer

To terminate the execution of the switch-case statement.

Answer

To execute the default case statement.

Answer

To evaluate the next case statement.

Answer

To terminate the execution of the program.

Question 19

Explain the fundamental difference between an if statement and a while statement.

Accepted Answer

An if statement executes a block of code when a condition is true, while a while statement repeatedly executes a block of code as long as a condition remains true.

Answer

An if statement tests a condition and returns a Boolean value, while a while statement executes a block of code indefinitely.

Question 20

In JavaScript, what is the correct syntax for a ternary conditional operator?

Accepted Answer

condition ? trueValue : falseValue

Answer

condition : trueValue ? falseValue

Answer

(condition) ? trueValue : falseValue

Answer

if (condition) ? trueValue : falseValue

Question 21

In a switch-case statement, what is the purpose of a default case?

Accepted Answer

To execute a block of code if none of the other cases match.

Answer

To evaluate the condition of the switch-case statement.

Answer

To exit the switch-case statement.

Question 22

What is the purpose of the continue statement in a loop?

Accepted Answer

To skip the remaining statements in the current iteration and move to the next iteration.

Answer

To evaluate the condition of the loop.

Answer

To exit the loop.