[Solved] Find the error in this C# code snippet:string s = null; int len = s.Length; Console.WriteLine(len); - Ans: NullReferenceException because s is null when accessing Length | C Sharp (C#)

C Sharp (C#) - Strings and StringBuilder

Find the error in this C# code snippet:

string s = null;
int len = s.Length;
Console.WriteLine(len);

ASyntax error: missing semicolon

BNullReferenceException because s is null when accessing Length

CCompile error: string cannot be null

DNo error, prints 0

Step-by-Step Solution

Solution:

Step 1: Identify null string usage
s is assigned null, so it points to no string object.
Step 2: Accessing Length on null causes runtime error
Trying to get Length property on null throws NullReferenceException.
Final Answer:
NullReferenceException because s is null when accessing Length -> Option B
Quick Check:
Accessing members on null causes NullReferenceException [OK]

Quick Trick: Never access properties on null strings without checks [OK]

Common Mistakes:

MISTAKES

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