Value type copying behavior in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a value type variable.

C Sharp (C#)

int [1] = 10;

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Anumber

BrefNumber

CmyClass

Dobj

Attempts:

3 left

💡 Hint

Common Mistakes

Using names that imply reference types instead of value types.

The variable number is a simple value type variable of type int.

2fill in blank

medium

Complete the code to copy the value of one variable to another.

C Sharp (C#)

int a = 5;
int b = [1];

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Aref a

Ba

C&a

Dnew int()

Attempts:

3 left

💡 Hint

Common Mistakes

Using reference or address operators which are invalid here.

Assigning b = a copies the value of a into b.

3fill in blank

hard

Fix the error in copying a struct value.

C Sharp (C#)

struct Point { public int X; public int Y; }

Point p1 = new Point { X = 1, Y = 2 };
Point p2 = [1];
p2.X = 5;

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Ap1

B&p1

Cref p1

Dnew Point()

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to assign struct by reference using & or ref keywords.

Assigning p2 = p1 copies the struct value. Using &p1 or ref p1 is invalid here.

4fill in blank

hard

Fill both blanks to create a copy of a struct and modify it without changing the original.

C Sharp (C#)

struct Rectangle { public int Width; public int Height; }

Rectangle rect1 = new Rectangle { Width = 10, Height = 20 };
Rectangle rect2 = [1];
rect2.Width = [2];

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Arect1

Brect2

C15

Drect1.Width

Attempts:

3 left

💡 Hint

Common Mistakes

Modifying the original struct instead of the copy.

Assigning rect2 = rect1 copies the value. Changing rect2.Width to 15 does not affect rect1.

5fill in blank

hard

Fill all three blanks to demonstrate that changing a copied value type does not affect the original.

C Sharp (C#)

struct Circle { public int Radius; }

Circle c1 = new Circle { Radius = 7 };
Circle c2 = [1];
c2.Radius = [2];
Console.WriteLine(c1.Radius == [3]);

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

Ac1

B10

C7

Dc2

Attempts:

3 left

💡 Hint

Common Mistakes

Assuming changing the copy changes the original.

Assigning c2 = c1 copies the value. Changing c2.Radius to 10 does not change c1.Radius, which remains 7.