If statement execution flow 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#)

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

2fill in blank

medium

Complete the code to print "Even" when the number is divisible by 2.

C Sharp (C#)

if (number [1] 2 == 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 '+' or '-' instead of '%' will not check divisibility.

Using '*' will multiply, not check remainder.

The modulus operator '%' gives the remainder. If remainder is 0 when divided by 2, the number is even.

3fill in blank

hard

Fix the error in the if statement to correctly check if age is at least 18.

C Sharp (C#)

if (age [1] 18) {
    Console.WriteLine("Adult");
}

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

A<=

B==

C<

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<=' checks if age is less than or equal to 18, which is incorrect here.

Using '==' checks only if age equals 18, not greater.

To check if age is at least 18, use '>=' which means greater than or equal to 18.

4fill in blank

hard

Fill both blanks to print "Teenager" if age is between 13 and 19 inclusive.

C Sharp (C#)

if (age [1] 13 && age [2] 19) {
    Console.WriteLine("Teenager");
}

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

A>=

B<

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '<=' excludes 19 from the range.

Using '>' instead of '>=' excludes 13 from the range.

The age should be greater than or equal to 13 and less than or equal to 19 to be a teenager.

5fill in blank

hard

Fill the blanks to print "Grade A" if score is above 90, "Grade B" if score is above 80, else "Grade C".

C Sharp (C#)

if (score [1] 90) {
    Console.WriteLine("Grade A");
} else if (score [2] 80) {
    Console.WriteLine("Grade B");
} else {
    Console.WriteLine("Grade C");
}

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

A>=

B>

C<=

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' includes 90 in Grade A, but the question says 'above 90'.

Using '<=' in the else if condition is incorrect here.

Use '>' to check if score is strictly greater than 90 or 80. The else covers scores less than or equal to 80.