I want to learn about two of the escape characters.
\N where N is an octal constant
\xN where N is an hexadecimal constant
Where and how can I use it. I couldn't use it in printf.
Can you show me an example?
I want to learn about two of the escape characters.
\N where N is an octal constant
\xN where N is an hexadecimal constant
Where and how can I use it. I couldn't use it in printf.
Can you show me an example?
Why couldn't you use it in printf? Try this: printf("\x41\n");Originally Posted by GokhanK
It should print an 'A', which has hex value 0x41 in the ASCII table.
If you understand what you're doing, you're not learning anything.
If you cannot type a character, but you know its number, that's when you can use it. For example, a specific number in an encoding might refer to a Japanese kanji, or an umlaut a in German, or a Cyrillic letter. One place they would be used is in string tables (but not std::string) for an application that needs to know how to display things in various languages.
I hadn't been able to use it because I had totally misunderstood the structure and logic. Thanks a lot for your nice reply. I have understood it now.
And this one explains me a lot about where I will use it. Thanks to you also.
Use the '\o' escape sequence like you use the '\x' one to print octal values as characters.
I tried that one but it doesn't work
For example; to print A
printf("\x041"); or printf("\101");
Both of them work But \o101 doesn't work.
Oh.
I stand corrected, then.
You might have seen, something like \033 which is an octal character constant - exactly \###.
Last edited by whiteflags; 02-24-2011 at 08:03 PM.
