All Flashcards
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.
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 the process of evaluating an if-else if-else statement?
Evaluate the first if condition. If true, execute its block. Otherwise, evaluate each else if condition in order. If none are true, execute the else block (if present).
What are the steps to determine if a year is a leap year?
- If divisible by 400, it is a leap year. 2. Else, if divisible by 100, it is not a leap year. 3. Else, if divisible by 4, it is a leap year. 4. Otherwise, it is not a leap year.
Describe the process of debugging an if-else if-else statement.
- Trace the code with different inputs. 2. Check the order of conditions. 3. Verify braces and indentation. 4. Test edge cases.
What is the process of creating a grade calculator using if-else if-else statements?
- Define score ranges for each grade. 2. Use
if-else if-elseto check which range the score falls into. 3. Return the corresponding grade.
What are the steps to decide the largest divisor of a number between 1 and 10?
Check divisibility by 10, 9, 8, 7, 6, 5, 4, 3, and 2 in that order. If divisible, return that number. Otherwise, return 1.
What is the process of finding the output of nested if-else if-else statements?
Start with the outer if statement and evaluate its condition. If true, trace the code inside the block; otherwise, move to the next else if or else block.
What is the process of converting a complex if-else if-else structure into simpler methods?
Identify logical blocks, create separate methods for each block, and call these methods from the main if-else if-else structure.
What are the steps for writing a method that uses if-else if-else statements?
- Define the method signature. 2. Write the
ifconditions. 3. Addelse ifconditions as needed. 4. Include anelseblock if necessary. 5. Return the appropriate value.
What is the process of handling multiple conditions using if-else if-else statements?
Start with the most restrictive condition first, then proceed to less restrictive conditions, ending with the else block for the default case.
What are the steps for testing an if-else if-else statement?
- Write test cases for each condition. 2. Include edge cases. 3. Verify the output for each test case. 4. Debug any errors.