[Solved] Find the error in this code snippet:StringBuilder sb = new StringBuilder(); sb.AppendLine("Line1"); sb.AppendLine(123); Console.WriteLine(sb); | C Sharp (C#)

C Sharp (C#) - Strings and StringBuilder

Find the error in this code snippet:

StringBuilder sb = new StringBuilder();
sb.AppendLine("Line1");
sb.AppendLine(123);
Console.WriteLine(sb);

AMissing ToString() when printing StringBuilder

BAppendLine adds no newline character

CStringBuilder must be initialized with a string

DAppendLine cannot take an integer argument

Step-by-Step Solution

Solution:

Step 1: Check AppendLine method overloads
AppendLine only accepts no argument or string; no overload for integer or object.
Step 2: Identify the invalid call
sb.AppendLine(123) fails to compile as there is no AppendLine(int) overload.
Final Answer:
AppendLine cannot take an integer argument -> Option D
Quick Check:
AppendLine overloads = string only [OK]

Quick Trick: AppendLine(string) only; use Append for ints/objects [OK]

Common Mistakes:

MISTAKES

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