What is the difference between Console.Read() and Console.ReadLine()

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Hi Experts

What is the difference between Console.Read() and Console.ReadLine(). Now i am confused with many answers. Can anyone give code example for this, which would great for me to clearly understand the concept.

Help me. I face this question in many interviews. Till now i did not find the correct answer.

Posted 8-Dec-13 18:20pm

Vijaydhas

Updated 11-Jun-18 4:04am

Sergey Alexandrovich Kryukov

v2

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Sergey Alexandrovich Kryukov 9-Dec-13 1:12am

Is it really so hard to read original MSDN documentation?
By the way, bad interview questions, really bad. Maybe you were lucky not to get in a bad company... :-)
But you certainly need better skills to get a job in a good one... Learning particular APIs does not matter much though...
—SA

Vijaydhas 9-Dec-13 1:25am

I have attend 29 interviews.. 7 company where ask this question. Coming Saturday i am going to attend 30th interview. For that i preparing for that. May be there also they will ask this same question..!!

Sergey Alexandrovich Kryukov 9-Dec-13 1:34am

Amazing! So many lousy interviewers. I can imagine what else they could ask. This is the clear indication that these people have no clue on what programming is, but still pretend they do programming. Sad but true: way too typical.

And one advice for you: don't prepare to interviews, this is nearly useless. You will get experience with time, but preparing won't help. Don't waste your time and nerve. Do some development and learning, regardless to interviews. Really, try it. Another method: forget about your desire to get the job, it always helps. Pretend you already got an offer and only discuss the detail. While doing so, focus on understanding what those people will want to get from your help and how can you help them. Really.

—SA

Vijaydhas 9-Dec-13 1:52am

Sure.. Thank you.. :-)

Jörgen Andersson 9-Dec-13 2:04am

Where's the upvoting button for comments? This is good advice.

Sergey Alexandrovich Kryukov 9-Dec-13 2:09am

Thank you very much Jörgen.

If you thought that the up-voting button is not available in this case, don't even hope. :-)
It's here: http://www.codeproject.com/Answers/484192/SSRSplusinterviewplusquestionsplusandplusanswers#answer4 :-)
—SA

Jörgen Andersson 9-Dec-13 3:21am

Cheeky. :-D

[no name] 15-May-14 3:53am

Difference between Read(),Readline() and ReadKey() in C#

Console.ReadLine():-- method accept the String and return the string as well.

Console.Read():--method accept the String but return Integer.

Console.ReadKey():--method accept the Character and return ASCII value of that character .

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Karthik_Mahalingam · Answer 1 · 2013-12-08T18:52:00

Hi Vijay,
this will make you clear i guess.

C#

class Program
    {
        static void Main(string[] args)
        {
            //Writes the specified string value to the standard output stream (console window)
            Console.Write("All");
            Console.Write(" is");
            Console.Write(" well");
           // output
           // All is well


             //Writes the specified string value, followed by the current line terminator,
            //     to the standard output stream. (console window)
            Console.WriteLine("All");
            Console.WriteLine(" is");
            Console.WriteLine(" well");
            // output
            /*All
             * is
             * well
             */

            Console.Write("test" + Environment.NewLine); // 1) appended a line terminator explicitly
            Console.WriteLine("test"); //2) appends a line terminator implicitly. // (1 & 2) both are same.

            Console.ReadLine();

        }
    }

vaibhav y. telange · Answer 2 · 2013-12-08T18:22:00

Read(), ReadLine() and ReadKey() are basically static methods, and they comes under the Console class. That's why we use these methods like:

Console.Read();
Console.Readline();
Console.ReadKey();

Now Lets see what is the differences in all these methods:

Console.Read():-- method accept the String and return the string as well.

Console.ReadLine():--method accept the String but return Integer.

Finally...

Console.ReadKey():--method accept the Character and also return Character.

That's why we mostly use the Console.ReadKey() method, for come back to source code from output window .

Because when we only press the character we directly come on source code. If you will use the Console.Read() and Console.ReadLine method then
you need to press Enter, come back to the source code rather then any character.

Soumitra Mithu · Answer 3 · 2013-12-08T18:24:00

Solution 2

Console.Read() reads only the next character from standard input, and Console.ReadLine() reads the next line of characters from the standard input stream.

check this article
http://stackoverflow.com/questions/6825943/difference-between-console-read-and-console-readline[^]
http://onlydifferencefaqs.blogspot.com/2012/08/difference-between-readreadline-and.html[^]

Posted 8-Dec-13 18:24pm

Soumitra Mithu

Comments

Vijaydhas 9-Dec-13 0:36am

Already i refer this both websites. But there is no example. Please give me simple example.

Sergey Alexandrovich Kryukov 9-Dec-13 1:15am

You asked for it! I'll have to tag your question with "No effort" as you persist with this unfortunate trend.
(But please don't get me wrong: I did not want to discourage you to ask follow-up questions. No effort is mostly related to the original question. Why not reading on this simple topic first?)
—SA

Vijaydhas 9-Dec-13 1:35am

I read some simple topics.. But i can not get the exact answer to me. After ridoy's answer i found one more reference. http://www.dotnetperls.com/console-read

This link was clear about my doubt..

(Sorry For my poor language..)

Sergey Alexandrovich Kryukov 9-Dec-13 1:38am

All right. I would advise: next time, read on the topic thoroughly, try to make an evidence to yourself that you understand thing by writing some code and testing it, and ask question only if you are in doubt after that. Not only it can save this site from low-value posts, but will be much more useful for you.
—SA

Vijaydhas 9-Dec-13 1:46am

Actually I tried myself.

//Read only a single char
int i = Console.Read();
Console.WriteLine(i);

// Read the whole string
sting s = Console.ReadLine();
Console.WriteLine(s);

// Difference between ReadKey() and ReadLine()
//Console.ReadKey();
Console.ReadLine();

I can not get the clear idea.. That's why i ask in this Experts Site..!! And thanks for your advice..!! :-)

Thank you..!!

ridoy · Answer 4 · 2013-12-08T18:39:00

Solution 3

Below link will clear you most:
What is difference between Console.Read() and Console.ReadLine() in Context of C#[^]

Posted 8-Dec-13 18:39pm

ridoy

Updated 8-Dec-13 20:00pm

v5

Comments

Vijaydhas 9-Dec-13 1:06am

Thank you.. It's very useful example. Easy to understand. Thanks again for instant reply..!!

ridoy 9-Dec-13 1:10am

Well, glad to help you.

Sergey Alexandrovich Kryukov 9-Dec-13 1:10am

Sorry, you messed up a lot here. On Windows, this is #13#10. And #10 is "line feed", #13 is carriage return.
More importantly, CLR is multiplatform, and this end-of-like string depends on platform. The same code with WriteLine will generate different bytes on different platform. So farm you mislead the OP...
—SA

ridoy 9-Dec-13 1:15am

I say CR is one of the difference btn those 2, and as per Op's reply it is clear he asks it in case of Windows as he marked that as answer later. Moreover, that link cleared him most.

Sergey Alexandrovich Kryukov 9-Dec-13 1:26am

Well, link is a link, but this is not the excuse for a mistake. And you should not assume it's Windows...
—SA

ridoy 9-Dec-13 1:34am

Why not we can assume? You can't read OP's mind until he confirms something, right? Lets say i assume windows, but reading the solution OP confirms he needs it for some other platform, then i can explain that what OP wants. That's the process, you can't discuss everything of the world of a specific question, right?

Sergey Alexandrovich Kryukov 9-Dec-13 1:40am

Right, but... again. This all is not an excuse for false statements. Why cannot you see my point? Of you don't want to "discuss everything", just don't post a statement which are not certainly correct... Isn't it easy?
—SA

ridoy 9-Dec-13 1:45am

But what is false here? ReadLine()defines a sequence of characters which are terminated by a carriage-return. From that point of view i said, CR is one of the difference as it is not needed in case of Read().

Sergey Alexandrovich Kryukov 9-Dec-13 1:56am

First of all, I did not tell that ReadLine sends any characters, you did. But if you are talking about characters, #10 is like feed, #13 is carriage return. Don't you mess up key codes with characters, as WuRunZhe does? If this is so, then... wow! You need to sort it out. I did not talk about ReadLine at all, I am talking about your wrong understanding of characters.
After all, look here:
http://en.wikipedia.org/wiki/ASCII

Better now?

—SA

WuRunZhe 9-Dec-13 1:17am

Well, I think "Enter" key is #10. So, ridoy is right. You're wrong!!!

Sergey Alexandrovich Kryukov 9-Dec-13 1:24am

"I think"... No! What's going on with you guys? Is it so difficult to read reference material? Doh!...
As to you, you don't even understand the difference between keys and characters. Same number are used for key codes and characters but mean different things. Now, I can imagine the mistakes you can make due to this total messy misconception, I already saw such things...
Enter key is not a character at all. You need to learn the very basics, honestly...
—SA

Nachiket G · Answer 5 · 2018-06-11T04:06:00

Solution 6

It is best to understand this by trying in Visual studio. But if you still prefer to read, the shortest way to understand is below :

Console.Read() : Reads the next character from the standard input stream. A static method which accepts the String but returns an Integer

Console.ReadLine() : Reads the next line of characters from the standard input stream. A static method which accepts the String and return the string as well

Hope this helps!

Posted 11-Jun-18 4:06am

Nachiket G

Comments

Richard MacCutchan 11-Jun-18 11:00am

Answered more than FOUR years ago.

Nachiket G 11-Jun-18 11:34am

Haha. Didn't realize its that old.
Just appeared in Quick Answers > View All Questions, so I answered. Nevermind. :)

Richard MacCutchan 11-Jun-18 11:39am

You need to always look at the date below the question. Some people come here, search for a specific subject just so they can post an 'answer', often in questions more than 5 or 6 years old.

Nachiket G 11-Jun-18 11:44am

Sure, will remember it for next time. Thanks.

What is the difference between Console.Read() and Console.ReadLine()

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