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Question

case : 'AB'

is it valid to write multiple characters in single quotes?

And if valid does ASCII value of a& b gets added and stored as integral constant?

Thanks

Comments

@shaik where did you get such an explanation?

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@arjun sir

Explaination provided above is correct?

Thanks

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@Mayankprakash , @ Arjun

sir, i am sorry for that, i didn't gave total explanation.. i will add it as answer

Answer 1

An integer character constant has type int.

The value of an integer character constant containing a single character that maps to a single-byte execution character is the numerical value of the representation of the mapped character interpreted as an integer.

The value of an integer character constant containing more than one character (e.g., 'ab'), or containing a character or escape sequence that does not map to a single-byte execution character, 

therefore they got the size of int 

103	102	101	100

 

let 'AB' ==> if you are using little endien ===> char c = 'AB' mapped to 'B' ( due to character hold only one Byte Memory )

'\0'	'\0'	'A'	'B'
103	102	101	100

 

 

if you are using big endien ===> char c = 'AB' mapped to '\0' ( due to character hold only one Byte Memory )

'\0'	'\0'	'A'	'B'
100	101	102	103

 

Comments

For GATE purpose it is always better to compile on your system. And answer is given here:

https://stackoverflow.com/a/26086630

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sir, what is meaning of implementation defiend in that paragraph??

They are talking about little endian and big endian ??

or something more than this.

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Implementation defined means 'compiler defined' and not defined by C language. -- Here itself you can leave such questions as they become out of GATE or any standard exam scope. Now, some C compiler might be doing like what you explained - but no point in going after that as it is not the standard behaviour. As usual, this is another question for Let Us C users to waste their time.