[Solved] What will be the output of this code snippet if the file "numbers.txt" contains the lines: "1", "2", "3"?var lines = File.ReadAllLines("numbers.txt"); Console.WriteLine(lines.Length); | C Sharp (C#)

C Sharp (C#) - File IO

What will be the output of this code snippet if the file "numbers.txt" contains the lines: "1", "2", "3"?

var lines = File.ReadAllLines("numbers.txt");
Console.WriteLine(lines.Length);

A1

B3

C0

DThrows an exception

Step-by-Step Solution

Solution:

Step 1: Understand what ReadAllLines returns
It returns an array of strings, each line is one element.
Step 2: Count the number of lines in the file
The file has 3 lines, so lines.Length is 3.
Final Answer:
3 -> Option B
Quick Check:
Lines count = 3 [OK]

Quick Trick: ReadAllLines returns array; Length gives line count [OK]

Common Mistakes:

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What will be the output of this code snippet if the file "numbers.txt" contains the lines: "1", "2", "3"?