Which of the following is the correct syntax to declare a HashSet and add the number 5 to it?

HashSet set = new HashSet(); set.Add(5);

Which of the following is the correct syntax to declare a HashSet and add the number 5 to it?

Solution:Step 1: Check correct generic HashSet declarationvar set = new HashSet<int>(); set.Add(5); correctly declares with new HashSet<int>() and uses Add(5).Step 2: Identify syntax errors in other optionsThe option with HashSet<int> set = new HashSet(); misses generic on construc

[Solved] Which of the following is the correct syntax to declare a HashSet<int> and add the number 5 to it? - Ans: var set = new HashSet(); set.Add(5); | C Sharp (C#)

C Sharp (C#) - Collections

Which of the following is the correct syntax to declare a HashSet<int> and add the number 5 to it?

Avar set = new HashSet<int>(); set.Add = 5;

BHashSet<int> set = new HashSet(); set.Add(5);

Cvar set = new HashSet<int>(); set.Add(5);

DHashSet set = new HashSet<int>(); set.Add(5);

Step-by-Step Solution

Solution:

Step 1: Check correct generic HashSet declaration
var set = new HashSet<int>(); set.Add(5); correctly declares with new HashSet<int>() and uses Add(5).
Step 2: Identify syntax errors in other options
The option with HashSet<int> set = new HashSet(); misses generic on constructor. The option with set.Add = 5; uses invalid assignment. The option with HashSet set = new HashSet<int>(); has wrong variable type.
Final Answer:
var set = new HashSet<int>(); set.Add(5); -> Option C
Quick Check:
Correct HashSet syntax = var set = new HashSet<int>(); set.Add(5); [OK]

Quick Trick: Use Add() method to insert elements into HashSet [OK]

Common Mistakes:

MISTAKES

Omitting generic type in constructor
Using assignment instead of Add()
Declaring variable without generic type

Master "Collections" in C Sharp (C#)

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

More C Sharp (C#) Quizzes

Which of the following is the correct syntax to declare a HashSet<int> and add the number 5 to it?

Step 1: Check correct generic HashSet declaration

Step 2: Identify syntax errors in other options

Final Answer:

Quick Check:

Want More Practice?