If-else execution flow 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 = 5;
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 the number is zero.

The condition should check if the number is greater than zero to be positive.

2fill in blank

medium

Complete the code to print "Even" if the number is even.

C Sharp (C#)

int num = 4;
if (num % 2 [1] 0)
{
    Console.WriteLine("Even");
}

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

A==

B!=

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' will check for odd numbers instead.

Using '>' or '<' does not make sense for checking remainder.

The remainder when dividing by 2 is zero for even numbers.

3fill in blank

hard

Fix the error in the if-else statement to correctly print "Negative" or "Non-negative".

C Sharp (C#)

int val = -3;
if (val [1] 0)
{
    Console.WriteLine("Negative");
}
else
{
    Console.WriteLine("Non-negative");
}

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 instead.

Using '>=' or '<=' includes zero, which is not negative.

To print "Negative", the condition should check if val is less than zero.

4fill in blank

hard

Fill both blanks to print "Adult" if age is 18 or more, otherwise "Minor".

C Sharp (C#)

int age = 20;
if (age [1] 18)
{
    Console.WriteLine("Adult");
}
else
{
    Console.WriteLine("[2]");
}

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

A>=

B<

CMinor

DAdult

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<=' instead of '>=' reverses the logic.

Printing "Adult" in the else block is incorrect.

The condition checks if age is 18 or more (>= 18) to print "Adult"; otherwise, print "Minor".

5fill in blank

hard

Fill all three blanks to print "Fizz", "Buzz", or "FizzBuzz" based on divisibility.

C Sharp (C#)

int number = 15;
if (number [1] 3 == 0 && number [2] 5 == 0)
{
    Console.WriteLine("[3]");
}

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

A%

CFizzBuzz

DFizz

Attempts:

3 left

💡 Hint

Common Mistakes

Using '/' instead of '%' causes wrong checks.

Printing "Fizz" instead of "FizzBuzz" when divisible by both.

Use the modulus operator '%' to check divisibility. If divisible by both 3 and 5, print "FizzBuzz".