All Flashcards
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.
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 is the output of the following code?
java
int x = 10;
if (x < 5) {
System.out.println("A");
} else if (x > 5 && x < 15) {
System.out.println("B");
} else {
System.out.println("C");
}
B
What is the output of the following code?
java
int num = 7;
if (num % 2 == 0) {
System.out.println("Even");
} else if (num % 3 == 0) {
System.out.println("Divisible by 3");
} else {
System.out.println("Odd");
}
Odd
What is the output of the following code?
java
int age = 20;
if (age < 13) {
System.out.println("Child");
} else if (age >= 13 && age <= 19) {
System.out.println("Teenager");
} else {
System.out.println("Adult");
}
Adult
Identify the error in the following code:
java
int x = 5;
if (x = 5) {
System.out.println("Equal");
}
The condition x = 5 should be x == 5. The single = is an assignment, not a comparison.
Identify the error in the following code:
java
int grade = 95
if (grade >= 90) {
System.out.println("A");
} else if (grade >= 80) {
System.out.println("B");
}
Missing semicolon at the end of int grade = 95.
What is the output of the following code?
java
int score = 65;
if (score >= 90) {
System.out.println("A");
} else if (score >= 80) {
System.out.println("B");
} else if (score >= 70) {
System.out.println("C");
} else if (score >= 60) {
System.out.println("D");
} else {
System.out.println("F");
}
D
What is the output of the following code?
java
int day = 4;
String dayString;
if (day == 1) {
dayString = "Monday";
} else if (day == 2) {
dayString = "Tuesday";
} else if (day == 3) {
dayString = "Wednesday";
} else {
dayString = "Other";
}
System.out.println(dayString);
Other
What is the output of the following code?
java
int temp = 75;
if (temp < 60) {
System.out.println("Cold");
} else if (temp >= 60 && temp < 80) {
System.out.println("Moderate");
} else {
System.out.println("Hot");
}
Moderate
What is the output of the following code?
java
int value = 15;
if (value % 5 == 0) {
System.out.println("Divisible by 5");
} else if (value % 3 == 0) {
System.out.println("Divisible by 3");
} else {
System.out.println("Not divisible by 3 or 5");
}
Divisible by 5
Identify the error in the following code:
java
int number = 10;
if (number > 5)
System.out.println("Greater than 5");
else if (number < 5) {
System.out.println("Less than 5");
}
Missing curly braces {} for the first if block. Only the first line after the if statement will be conditionally executed.