Explicit value assignment in C Sharp (C#) - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of explicit enum value assignment

What is the output of this C# program?

C Sharp (C#)

enum Status { Ready = 1, Waiting = 5, Complete = 10 }

class Program {
    static void Main() {
        Status s = Status.Waiting;
        System.Console.WriteLine((int)s);
    }
}

A 5

B 1

C 10

D 0

💡 Hint

Look at the explicit value assigned to Waiting in the enum.

The enum Status assigns Waiting the value 5 explicitly. Casting it to int prints 5.

❓ Predict Output

intermediate

Value of explicitly assigned variable

What value is printed by this C# code?

C Sharp (C#)

class Program {
    static void Main() {
        int x = 10;
        int y = x = 20;
        System.Console.WriteLine(y);
    }
}

A 0

B 10

C Compilation error

D 20

💡 Hint

Remember that assignment returns the assigned value.

The expression x = 20 assigns 20 to x and returns 20, which is then assigned to y.

❓ Predict Output

advanced

Output of explicit struct field assignment

What is the output of this C# program?

C Sharp (C#)

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

class Program {
    static void Main() {
        Point p = new Point { X = 5 };
        System.Console.WriteLine(p.Y);
    }
}

A Compilation error

B 5

C 0

D NullReferenceException

💡 Hint

Unassigned int fields in structs default to zero.

Since Y is not assigned, it defaults to 0 in the struct.

❓ Predict Output

advanced

Output of explicit constant value assignment

What does this C# code print?

C Sharp (C#)

class Program {
    const int a = 3;
    const int b = a + 4;
    static void Main() {
        System.Console.WriteLine(b);
    }
}

A 3

B 7

C Compilation error

D 0

💡 Hint

Constants can be assigned expressions with other constants.

b is assigned a + 4, which is 3 + 4 = 7.

🧠 Conceptual

expert

Effect of explicit value assignment on enum underlying values

Given this enum declaration, what is the value of Color.Blue? enum Color { Red = 2, Green, Blue = 10, Yellow } Choose the correct value of Color.Blue.

A 10

B 3

C 11

D 2

💡 Hint

Explicit assignment resets the counting for following members.

Blue is explicitly assigned 10, so its value is 10, not 3 or 11.