[Solved] What is wrong with this code snippet?var dict = new Dictionary<int, string>(); dict.Add(1, "apple"); dict.Add(1, "banana"); | C Sharp (C#)

C Sharp (C#) - Collections

What is wrong with this code snippet?

var dict = new Dictionary<int, string>();
dict.Add(1, "apple");
dict.Add(1, "banana");

AIt will compile and run without errors

BIt causes a runtime exception due to duplicate key

CIt overwrites the first value with the second

DIt causes a compile-time error

Step-by-Step Solution

Solution:

Step 1: Understand Add() behavior with duplicate keys
Adding a key that already exists causes a runtime exception.
Step 2: Check code behavior
Second Add with key 1 throws an ArgumentException at runtime.
Final Answer:
It causes a runtime exception due to duplicate key -> Option B
Quick Check:
Duplicate keys cause runtime error [OK]

Quick Trick: Add() fails if key exists; use indexer to overwrite [OK]

Common Mistakes:

MISTAKES

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What is wrong with this code snippet?