Why methods are needed in C Sharp (C#) - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method that prints a greeting.

C Sharp (C#)

public void [1]() {
    Console.WriteLine("Hello, friend!");
}

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

APrint

BMain

CGreet

DStart

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Main' as method name here causes confusion with program entry point.

Choosing unrelated names like 'Start' or 'Print' does not match the greeting.

The method name should be Greet to match the greeting action.

2fill in blank

medium

Complete the code to call the method that prints a greeting.

C Sharp (C#)

class Program {
    static void Main() {
        [1]();
    }

    static void Greet() {
        Console.WriteLine("Hello, friend!");
    }
}

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

APrint

BGreet

CStart

DMain

Attempts:

3 left

💡 Hint

Common Mistakes

Calling 'Main' inside Main causes recursion error.

Using 'Print' or 'Start' which are not defined methods.

You call the method by its name Greet to print the greeting.

3fill in blank

hard

Fix the error in the method definition by completing the missing return type.

C Sharp (C#)

public [1] Greet() {
    Console.WriteLine("Hello!");
}

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

Avoid

Bbool

Cstring

Dint

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'int' or 'string' without returning a value causes errors.

Forgetting to specify 'void' when no return is needed.

The method does not return a value, so its return type must be void.

4fill in blank

hard

Fill both blanks to define and call a method that adds two numbers and returns the result.

C Sharp (C#)

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

static void Main() {
    int sum = Add(3, 4);
    Console.WriteLine(sum [2] 0);
}

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

A+

B>

C<

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-' instead of '+' in addition.

Using '<' instead of '>' in comparison.

The method adds two numbers using '+'. The Console.WriteLine checks if sum is greater than 0 using '>'.

5fill in blank

hard

Fill all three blanks to define a method that checks if a number is even and call it in Main.

C Sharp (C#)

public static bool IsEven(int num) {
    return num [1] 2 [2] 0;
}

static void Main() {
    bool result = IsEven([3]);
    Console.WriteLine(result);
}

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

A%

B==

C4

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '==' causes wrong result.

Passing wrong number to IsEven.

The method uses '%' to get remainder, '==' to check equality with 0, and calls IsEven with 4.