Nested conditional execution in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if a number is positive.

C Sharp (C#)

int number = 10;
if (number [1] 0)
{
    Console.WriteLine("Positive number");
}

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

A<

B>

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' will check for negative numbers.

Using '==' checks only if number equals zero, not positive.

The condition number > 0 checks if the number is positive.

2fill in blank

medium

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

C Sharp (C#)

int number = 8;
if (number > 0 && number [1] 2 == 0)
{
    Console.WriteLine("Positive even number");
}

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

A+

B/

C*

D%

Attempts:

3 left

💡 Hint

Common Mistakes

Using '/' checks division but not remainder.

Using '*' or '+' does not check evenness.

The modulus operator % checks the remainder. number % 2 == 0 means 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.

C Sharp (C#)

int number = 50;
if (number > 0)
{
    if (number [1] 100)
    {
        Console.WriteLine("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 '>' checks if number is greater than 100, which is incorrect here.

Using '==' or '!=' checks equality, not range.

The inner condition should check if number < 100 to confirm it is less than 100.

4fill in blank

hard

Fill both blanks to create a nested if that checks if a number is positive and divisible by 5.

C Sharp (C#)

int number = 25;
if (number [1] 0)
{
    if (number [2] 5 == 0)
    {
        Console.WriteLine("Positive and divisible by 5");
    }
}

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

A>

B<

C%

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' for positivity.

Using '/' instead of '%' for divisibility check.

The first condition checks if the number is greater than zero. The second uses modulus '%' to check divisibility by 5.

5fill in blank

hard

Fill all three blanks to create a nested if that checks if a number is negative, odd, and less than -10.

C Sharp (C#)

int number = -15;
if (number [1] 0)
{
    if (number [2] 2 != 0)
    {
        if (number [3] -10)
        {
            Console.WriteLine("Negative, odd, and less than -10");
        }
    }
}

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

A<

B%

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<' for negativity check.

Using wrong operator for odd check.

Using '>' instead of '<' for the last condition.

The first condition checks if number is less than zero (negative). The second uses modulus '%' to check if odd (remainder not zero). The third checks if number is less than -10.