[Solved] What will be the output of this C# code?var queue = new Queue<int>(); queue.Enqueue(10); queue.Enqueue(20); queue.Enqueue(30); Console.WriteLine(queue.Dequeue()); | C Sharp (C#)

C Sharp (C#) - Collections

What will be the output of this C# code?

var queue = new Queue<int>();
queue.Enqueue(10);
queue.Enqueue(20);
queue.Enqueue(30);
Console.WriteLine(queue.Dequeue());

A30

B20

C10

DError

Step-by-Step Solution

Solution:

Step 1: Understand Queue.Enqueue()
Items 10, 20, 30 are added in order to the queue.
Step 2: Understand Queue.Dequeue()
Dequeue removes the first item added, which is 10.
Final Answer:
10 -> Option C
Quick Check:
Queue.Dequeue() returns first added item [OK]

Quick Trick: Dequeue returns the oldest item in Queue [OK]

Common Mistakes:

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