Why Microsoft has provided if else and switch case both.. What is fundamental difference between both?

Question

1.00/5 (3 votes)

See more:

why microsoft has provided if else and switch case both.. what is fundamental difference between both?

What I have tried:

I have searched on google but not found fundamental difference between both.

Posted 8-Nov-19 1:09am

Vijay Radia

Updated 8-Nov-19 6:30am

Add a Solution

4 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Answer 1 · 2019-11-08T02:21:00

That comes from the C programming language (so I'm writing with C perspective in mind).
There can be performance differences between (long chain of) if/else if/else statements and switch (the latter being faster) but, in my opinion, the syntax matters more:
The if/else if/else construct is more versatile (not limited to comparisons with constant values) an better suited when the count of the conditions is relatively small. On the other hand, the switch statement is more concise and better suited when you have to cover a relatively large number of cases.

Richard MacCutchan · Answer 2 · 2019-11-08T01:15:00

Solution 1

These are not really anything to do with Microsoft. They are fundamental parts of the programming languages going back to pre C-language days. Study the documentation to see where each is appropriate to use.

Posted 8-Nov-19 1:15am

Richard MacCutchan

Comments

Vijay Radia 8-Nov-19 7:27am

i just want to know how c# compiler exactly compiles both

Richard MacCutchan 8-Nov-19 7:35am

There is not space here to explain the inner workings of a compiler. There are many examples and tutorials on the internet, that explain both statements.

RickZeeland · Answer 3 · 2019-11-08T01:34:00

Solution 2

Sometimes a Switch can be faster than an If else construction, but this is not always the case. Besides this will only be important if the code is iterated or called hundreds of times.
See examples here: https://www.dotnetperls.com/if-switch-performance[^]

Posted 8-Nov-19 1:34am

RickZeeland

deepak21188 · Answer 4 · 2019-11-08T06:31:00

Switch and if else are fundamentally different but both might replace each other in some cases. Switch evaluates a single expression and base on different results of the expression it selects different cases.

switch (i)
{
       case 1:
           Console.Write("1");
           break;
       case 2:
           Console.Write("2");
           break;
       default:
           Console.Write("default");
           break;
}

However, In case of if else, it eveluates multiple boolean expression and base of true or false , takes action

if(i>40)
{
   do something
}
else if(i>25 && i<35)
{
   do something
}
else if(i<20)
{
   do something
}

Why Microsoft has provided if else and switch case both.. What is fundamental difference between both?

4 solutions

Solution 3

Solution 1

Solution 2

Solution 4

Add your solution here

Preview 0