Static members vs instance members in C Sharp (C#) - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a static integer variable named count.

C Sharp (C#)

public class Counter {
    public static int [1];
}

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

Atotal

Bvalue

Ccount

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using instance variable syntax instead of static.

Choosing a variable name other than 'count'.

The static variable is named count as required.

2fill in blank

medium

Complete the code to access the static member count from the class Counter.

C Sharp (C#)

int currentCount = Counter.[1];

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

Avalue

Bnumber

Ctotal

Dcount

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to access static member via an instance.

Using a wrong member name.

Static members are accessed using the class name. Here, count is the static member.

3fill in blank

hard

Complete the code to access the instance member value without an object.

C Sharp (C#)

public class Item {
    public int value;
}

int x = Item.[1];

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

Avalue

Bcount

Cnumber

Dtotal

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to access instance members without creating an object.

Confusing static and instance members.

Instance members cannot be accessed directly from the class. This code causes an error because value is an instance member.

4fill in blank

hard

Fill both blanks to create an instance of Item and access its value member.

C Sharp (C#)

Item item = new [1]();
int val = item.[2];

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

AItem

BCounter

Cvalue

Dcount

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong class name to create the object.

Trying to access static members as instance members.

You create an instance of Item and access its instance member value.

5fill in blank

hard

Fill all three blanks to declare a static method that returns the static count variable.

C Sharp (C#)

public class Counter {
    public static int count;
    public static int [1]() {
        return [2].[3];
    }
}

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

AGetCount

BCounter

Ccount

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to access static variables without the class name inside static methods.

Using instance member names instead of static ones.

The static method GetCount returns the static variable count accessed via the class name Counter.