[Solved] What will be the output of this code?var sb = new System.Text.StringBuilder("abc"); sb.Append("def"); sb.Remove(2, 3); Console.WriteLine(sb.ToString()); | C Sharp (C#)

C Sharp (C#) - Strings and StringBuilder

What will be the output of this code?

var sb = new System.Text.StringBuilder("abc");
sb.Append("def");
sb.Remove(2, 3);
Console.WriteLine(sb.ToString());

Aabf

Babdef

Cab

Dabcdef

Step-by-Step Solution

Solution:

Step 1: Trace Append and Remove operations
Initial string is "abc". Append adds "def" making "abcdef". Remove(2,3) deletes 3 chars starting at index 2: removes "cde".
Step 2: Determine resulting string
After removal, string is "ab" + "f" = "abf".
Final Answer:
abf -> Option A
Quick Check:
Remove deletes substring correctly = abf [OK]

Quick Trick: Remove(start, count) deletes substring from StringBuilder [OK]

Common Mistakes:

MISTAKES

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