[Solved] Find the problem in this code:using(var writer = new StreamWriter("log.txt")) { writer.WriteLine("Start"); } writer.WriteLine("End"); | C Sharp (C#)

C Sharp (C#) - File IO

Find the problem in this code:

using(var writer = new StreamWriter("log.txt")) {
    writer.WriteLine("Start");
}
writer.WriteLine("End");

AStreamWriter cannot write strings

BWriteLine() cannot be called twice

CFile path must be absolute

Dwriter is used outside its using block causing error

Step-by-Step Solution

Solution:

Step 1: Analyze using block scope
writer is declared inside using block and disposed after block ends.
Step 2: Check usage after disposal
Calling writer.WriteLine outside the block causes an error because writer is disposed.
Final Answer:
writer is used outside its using block causing error -> Option D
Quick Check:
Using block disposes writer after block ends [OK]

Quick Trick: Use StreamWriter only inside using block scope [OK]

Common Mistakes:

MISTAKES

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