All Flashcards
Why is the order of conditions important in if-else if-else statements?
The first condition that evaluates to true will execute its code block, and the rest are skipped.
How many if and else blocks can you have in a multi-way selection?
One if and at most one else.
What happens if no conditions are true in an if-else if-else statement?
The else block (if present) is executed. If there is no else block, nothing happens.
Explain the concept of an implicit else.
When a return statement is used inside an if or else if block, code after the conditional can act as an implicit else because it is only reached if prior conditions are false.
What is the advantage of using else if over nested if statements?
else if provides a cleaner and more readable structure for handling multiple exclusive conditions.
Why is it important to test code with various inputs?
To ensure the code handles all possible cases correctly and to identify potential bugs.
How does an if-else if-else statement relate to a decision tree?
Each if or else if condition represents a branch in the tree, and the code inside is the action taken on that branch.
What is the role of braces {} in if-else if-else statements?
Braces define the code blocks associated with each condition, ensuring the correct code is executed.
What is the impact of missing braces in if-else if-else statements?
Missing braces can lead to incorrect code execution and logic errors, as the wrong code may be associated with a condition.
How does the return statement affect the flow of execution in a method?
The return statement immediately terminates the method and returns a value (if any) to the caller.
What are the differences between if-else if-else and nested if statements?
if-else if-else: Handles multiple exclusive conditions in a cleaner way. Nested if: Can handle more complex, non-exclusive conditions but can be less readable.
What are the differences between using && and || in if-else if-else conditions?
&& (AND): Both conditions must be true. || (OR): At least one condition must be true.
What is the difference between using an explicit else and an implicit else?
Explicit else: Clearly defines the block to execute when no conditions are true. Implicit else: Relies on return statements to achieve the same effect, but can be less clear.
What are the differences between using if statements and switch statements?
if statements: Evaluate boolean expressions. switch statements: Evaluate a single variable against multiple constant values.
What are the differences between using if-else if-else and a series of independent if statements?
if-else if-else: Only one block is executed. Series of if statements: Multiple blocks can be executed.
What are the differences between using if-else if-else and ternary operator?
if-else if-else: Handles multiple conditions and code blocks. Ternary operator: A shorthand for simple if-else statements.
What are the differences between using if-else if-else and while loops?
if-else if-else: Executes code blocks based on conditions. while loops: Repeatedly executes code blocks as long as a condition is true.
What are the differences between using if-else if-else and for loops?
if-else if-else: Executes code blocks based on conditions. for loops: Repeatedly executes code blocks a specified number of times.
What are the differences between using if-else if-else and try-catch blocks?
if-else if-else: Handles different conditions in normal program flow. try-catch blocks: Handles exceptions and errors.
What are the differences between using if-else if-else and boolean algebra?
if-else if-else: Executes code blocks based on conditions. Boolean algebra: Manipulates boolean values using operators like AND, OR, and NOT.
What is an if-else if-else statement?
A control flow statement that executes different code blocks based on multiple conditions.
What is a condition in an if-else if-else statement?
A boolean expression that is evaluated to determine which code block to execute.
What is the purpose of the else block?
The else block executes if none of the preceding if or else if conditions are true.
Define 'multi-way selection'.
Choosing one option from several, based on different conditions.
What does 'restrictive condition' mean?
A condition that is more specific and less likely to be true.
What is meant by 'code block'?
A group of zero or more statements enclosed in curly braces {}.
What is 'indentation' in coding?
The visual spacing of code lines to improve readability and show code structure.
What is a 'return' statement?
A statement that ends the execution of a method and returns a value to the caller.
Define 'edge case'.
A problem or situation that only occurs at an extreme (maximum or minimum) operating parameter.
What is the purpose of tracing code?
Manually stepping through the code to understand its execution flow and identify errors.