[Solved] What is the output of this C# code? var stack = new Stack<int>(); stack.Push(1); stack.Push(2); stack.Push(3); Console.WriteLine(stack.Pop()); Console.WriteLine(stack.Peek()); | C Sharp (C#)

C Sharp (C#) - Collections

What is the output of this C# code?

var stack = new Stack<int>();
stack.Push(1);
stack.Push(2);
stack.Push(3);
Console.WriteLine(stack.Pop());
Console.WriteLine(stack.Peek());

A3\n2

B1\n2

C2\n3

D3\n3

Step-by-Step Solution

Solution:

Step 1: Trace Push operations
Stack after pushes: bottom=1, middle=2, top=3.
Step 2: Execute Pop and Peek
Pop() removes and returns top (3). Peek() returns new top (2) without removing.
Final Answer:
3\n2 -> Option A
Quick Check:
Pop=3, Peek=2 [OK]

Quick Trick: Pop removes top, Peek shows top without removing [OK]

Common Mistakes:

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What is the output of this C# code?