Return values and void methods in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to make the method return an integer value.

C Sharp (C#)

public int GetNumber() {
    return [1];
}

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

Anull

B5

Ctrue

D"5"

Attempts:

3 left

💡 Hint

Common Mistakes

Returning a string instead of an integer.

Returning a boolean value.

Returning null in a method that expects int.

The method returns an integer, so returning 5 is correct.

2fill in blank

medium

Complete the code to call the method and store its return value.

C Sharp (C#)

int result = [1]();

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AGetNumber

BPrintNumber

CShowMessage

DDisplay

Attempts:

3 left

💡 Hint

Common Mistakes

Calling a void method that does not return a value.

Using a method name that does not exist.

The method GetNumber returns an int, so calling it and storing the result is correct.

3fill in blank

hard

Fix the error in the method so it compiles correctly.

C Sharp (C#)

public void PrintMessage() {
    [1] "Hello!";
}

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Areturn

Bint

CConsole.WriteLine

Dvoid

Attempts:

3 left

💡 Hint

Common Mistakes

Using return in a void method without a value.

Declaring a type inside the method body.

The method should print the message using Console.WriteLine. Using return here is incorrect because the method is void.

4fill in blank

hard

Complete the code to create a method that returns the sum of two integers.

C Sharp (C#)

public int Sum(int a, int b) {
    return a [1] b;;
}

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A+

B-

C;

D,

Attempts:

3 left

💡 Hint

Common Mistakes

Using subtraction instead of addition.

Forgetting the semicolon at the end of the return statement.

The method returns the sum of a and b. The operator is + and the statement ends with a semicolon ;.

5fill in blank

hard

Fill both blanks to create a method that returns the uppercase version of a string.

C Sharp (C#)

public string ToUpperCase(string input) {
    string result = input[1]();
    return [2];
    // End of method
}

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

A.ToUpper

Bresult

Dinput

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the parentheses after ToUpper.

Returning the wrong variable.

Adding extra code after return statement.

The method calls ToUpper() on the input string, stores it in result, then returns result. The last blank is empty because no extra code is needed after the return.