Comparison operators in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if variable a is greater than b.

C Sharp (C#)

bool result = a [1] b;

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

A>

B<

C<=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using == instead of > to compare values.

Using < which means less than.

The > operator checks if the left value is greater than the right value.

2fill in blank

medium

Complete the code to check if score is less than or equal to 100.

C Sharp (C#)

if (score [1] 100) {
    Console.WriteLine("Valid score");
}

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

A<=

B<

C>=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using < which excludes equality.

Using >= which means greater than or equal.

The operator <= means 'less than or equal to'.

3fill in blank

hard

Fix the error in the comparison to check if age is not equal to 18.

C Sharp (C#)

if (age [1] 18) {
    Console.WriteLine("Age is not 18");
}

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

A==

B!=

C<>

D=

Attempts:

3 left

💡 Hint

Common Mistakes

Using = which is assignment, not comparison.

Using <> which is not valid in C#.

The operator != means 'not equal to' in C#.

4fill in blank

hard

Fill both blanks to create a dictionary that maps numbers to their squares only if the number is greater than 3.

C Sharp (C#)

var squares = new Dictionary<int, int> {
    { [1], [2] }
};

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

A4

B16

C3

D9

Attempts:

3 left

💡 Hint

Common Mistakes

Using 3 as key which is not greater than 3.

Using a value that is not the square of the key.

The key is 4 (greater than 3) and the value is its square 16.

5fill in blank

hard

Fill all three blanks to create a LINQ query that selects numbers from 1 to 5 where the number is less than 4 and doubles them.

C Sharp (C#)

var result = from num in Enumerable.Range(1, 5)
             where num [1] 4
             select num [2] [3];

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

A<

B*

C2

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using greater than operator in the where clause.

Using addition instead of multiplication for doubling.

The query filters numbers less than 4 and selects their doubles by multiplying by 2.