Else-if ladder execution in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the 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 else-if condition to check if the number is zero.

C Sharp (C#)

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

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

A!=

B>

C<

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' will check for any number except zero.

Using '<' or '>' will check for negative or positive numbers, not zero.

The condition number == 0 checks if the number is exactly zero.

3fill in blank

hard

Fix the error in the else-if ladder to correctly check if the number is negative.

C Sharp (C#)

int number = -5;
if (number > 0)
{
    Console.WriteLine("Positive number");
}
else if (number == 0)
{
    Console.WriteLine("Zero");
}
else if (number [1] 0)
{
    Console.WriteLine("Negative number");
}

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

A>

B==

C<

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' will check for positive numbers, not negative.

Using '==' checks for equality, not less than.

The condition number < 0 correctly checks if the number is negative.

4fill in blank

hard

Fill both blanks to complete the else-if ladder that prints the correct message based on the number.

C Sharp (C#)

int number = 0;
if (number [1] 0)
{
    Console.WriteLine("Positive number");
}
else if (number [2] 0)
{
    Console.WriteLine("Negative number");
}

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

A>

B<

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' in these conditions will not separate positive and negative numbers.

Swapping the operators will cause wrong messages.

The first condition checks if number is greater than zero (positive), the second checks if less than zero (negative).

5fill in blank

hard

Fill all three blanks to complete the else-if ladder that prints the correct message for positive, zero, or negative numbers.

C Sharp (C#)

int number = 5;
if (number [1] 0)
{
    Console.WriteLine("Positive number");
}
else if (number [2] 0)
{
    Console.WriteLine("Zero");
}
else
{
    Console.WriteLine("[3] number");
}

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

A>

B==

CNegative

DZero

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong operators in conditions.

Printing wrong message in else block.

The first condition checks if number is greater than zero (positive). The second checks if number equals zero. The else prints "Negative number" for all other cases.