Nested if statements in Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if a number is positive.

Java

int number = 10;
if ([1] > 0) {
    System.out.println("Positive number");
}

Drag options to blanks, or click blank then click option'

Anum

Bcount

Cvalue

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name that is not declared.

Forgetting to compare the variable to 0.

The variable number holds the value to check. Using number in the if condition correctly tests if it is positive.

2fill in blank

medium

Complete the code to check if a number is positive and even.

Java

int number = 8;
if (number > 0) {
    if (number [1] 2 == 0) {
        System.out.println("Positive even number");
    }
}

Drag options to blanks, or click blank then click option'

A%

B/

C*

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using division instead of modulus.

Using multiplication or addition operators incorrectly.

The modulus operator % checks the remainder. If number % 2 == 0, the number is even.

3fill in blank

hard

Fix the error in the nested if statement to check if a number is positive and less than 100.

Java

int number = 50;
if (number > 0) {
    if (number [1] 100) {
        System.out.println("Number is positive and less than 100");
    }
}

Drag options to blanks, or click blank then click option'

A<

B>=

C==

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using greater than instead of less than.

Using equality operator which only checks if number equals 100.

The condition should check if number is less than 100, so the operator < is correct.

4fill in blank

hard

Fill both blanks to check if a number is between 10 and 20 (inclusive).

Java

int number = 15;
if (number [1] 10 && number [2] 20) {
    System.out.println("Number is between 10 and 20");
}

Drag options to blanks, or click blank then click option'

A>=

B<

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using strict greater than or less than which excludes boundaries.

Mixing up the order of operators.

The number should be greater than or equal to 10 and less than or equal to 20, so use >= and <=.

5fill in blank

hard

Fill both blanks to print messages based on nested if conditions for age and score.

Java

int age = 20;
int score = 85;
if (age [1] 18) {
    if (score [2] 80) {
        System.out.println("Adult with high score");
    } else {
        System.out.println("Adult with low score");
    }
} else {
    System.out.println("Not an adult");
}

Drag options to blanks, or click blank then click option'

A>=

B>

C<=

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using > instead of >= for age.

Using <= instead of > for score.

The first condition checks if age is at least 18 (>=), the second if score is greater than 80 (>), and the else covers the rest.