Problem about console.writeline()

Question

2.33/5 (3 votes)

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C#

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(1+'1');
            Console.ReadLine();
             
        }
    }
}

Above the programm result 50.at debug mode i had findout '1' take as 49 and final result 50 and also if u take '2' result is 51.is it any order following.why it represent.
please help me.
thank u.

What I have tried:

Above the programm result 50.at debug mode i had findout '1' take as 49 and final result 50 and also if u take '2' result is 51.is it any order following.why it represent.

Posted 24-Jun-18 5:35am

Krishna Veni

Updated 24-Jun-18 5:52am

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[no name] 24-Jun-18 11:41am

'1' is a char which has the ordinal hex 0x31 or decimal 49. Therefore 49+1= 50 is very ok. For more information google for "ascii table" and read something like this:
https://www.asciitable.com/[^]

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Dave Kreskowiak · Answer 1 · 2018-06-24T05:42:00

Solution 1

The only problem here is your understanding. You're adding the integer value 1 to a CHARACTER, '1', which is has the ASCII code of 49 (decimal). So, 1 + 49 = 50.

Posted 24-Jun-18 5:42am

Dave Kreskowiak

Ravi Bhavnani · Answer 2 · 2018-06-24T05:42:00

The numeric value of the character '1' is 49. For a list of common character ASCII values, see this link: Ascii Table - ASCII character codes and html, octal, hex and decimal chart conversion[^]. The expression you're printing causes the integer value (49) of the character '1' to be added to the integer literal 1, hence the output of 50.

/ravi

Richard MacCutchan · Answer 3 · 2018-06-24T05:53:00

Solution 3

The key here is the order of the values in your expression. When the first value is a number or single character then the expression is converted to two numbers. If the first value is a string then the second value will be converted to a string and the two concatenated.

C#

Console.WriteLine(1 + '1'); // adds 1 + 49 Console.WriteLine('1' + 1); // adds 49 + 1 Console.WriteLine("1" + 1); // concatenates "1" and "1"

Output will be:

50 50 11

Posted 24-Jun-18 5:53am

Richard MacCutchan

Updated 26-Jun-18 8:37am

v2

Comments

Richard Deeming 26-Jun-18 13:19pm

The order of the values is irrelevant; it's the type of the values that matters. :)

Console.WriteLine(1 + "1"); // Also concatenates "1" and "1"

Richard MacCutchan 26-Jun-18 14:35pm

Thanks, my bad for not checking that last case, not getting the obvious from my first two..

OriginalGriff · Answer 4 · 2018-06-24T05:53:00

See here: Ascii Table - ASCII character codes and html, octal, hex and decimal chart conversion[^] It shows you the values of each ASCII code.
Because you are using C#, it's actually a Unicode character rather than ASCII, but for the characters you are interested in, ASCII is fine (Unicode is a superset of ASCII for the most part, but since it's 16 bits wide rather than 7 or 8, it's a lot easier to read the set map!). Unicode® character table[^]

If you want to increment to the next character, then you can. Try this:

char c = '1';
for (int i = 0; i < 30; i++)
    {
    Console.WriteLine("{0}:{1}", i + c, (char) (i + c));
    }

Problem about console.writeline()

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