All Flashcards
What are the basic steps for executing an if-else statement?
- Evaluate the condition. 2. If true, execute the 'if' block. 3. If false, execute the 'else' block.
What is the purpose of an 'else' statement?
To provide an alternative block of code to execute when the 'if' condition is false.
Why are curly braces {} important in if-else statements?
They define the code blocks for both the 'if' and 'else' parts, ensuring correct execution.
Explain the flow of execution in an if-else statement.
The condition is evaluated. If true, the 'if' block executes. If false, the 'else' block executes.
Why is indentation important in if-else statements?
Improves code readability and helps visually identify code blocks.
What is the output of the following code?
java
int x = 7;
if (x % 2 == 0) {
System.out.print("Even");
} else {
System.out.print("Odd");
}
Odd
What is the output of the following code?
java
int y = 12;
if (y > 10) {
System.out.print("Greater");
} else {
System.out.print("Less");
}
Greater
Identify the error in the following code:
java
int age = 17;
if (age >= 18)
System.out.print("Adult");
else
System.out.print("Minor");
Missing curly braces {} to define the code blocks for 'if' and 'else'.
What is the output of the following code?
java
int num = -5;
if (num > 0) {
System.out.print("Positive");
} else {
System.out.print("Not Positive");
}
Not Positive
Complete the code to check if a number is positive or negative.
java
int number = ...;
if (number > 0) {
System.out.print("Positive");
} else {
// Complete this part
}
java
System.out.print("Negative or Zero");
What is the output of the following code snippet?
java
int x = 5;
if (x > 10) {
System.out.print("A");
} else {
System.out.print("B");
}
B
Identify the error in the following code:
java
int age = 20
if (age > 18) {
System.out.println("Adult");
} else {
System.out.println("Not adult");
}
Missing semicolon at the end of the first line. (int age = 20;)
What is the output of the following code?
java
int a = 10;
int b = 5;
if (a < b) {
System.out.println("a is less than b");
} else {
System.out.println("a is not less than b");
}
a is not less than b
What is the output of the following code?
java
int number = 7;
if (number % 2 == 0) {
System.out.println("Even");
} else {
System.out.println("Odd");
}
Odd
What is the output of the following code?
java
int num = 15;
if (num > 10) {
System.out.println("Greater than 10");
} else {
System.out.println("Less than or equal to 10");
}
Greater than 10