help a new programmer

[taki4ever]

hello
im new in programing and i need some help
when i see source of some game i see some code new at me
like :

            WFIFOHEAD(RFIFOW(fd,2),8);
            WFIFOB(RFIFOW(fd, 2), 0) = '\xAA';
            WFIFOB(RFIFOW(fd, 2), 1) = '\x00';
            WFIFOB(RFIFOW(fd, 2), 2) = '\x05';
            WFIFOB(RFIFOW(fd, 2), 3) = '\x02';
            WFIFOB(RFIFOW(fd, 2), 4) = '\x17';
            WFIFOB(RFIFOW(fd, 2), 5) = '\x00';
            WFIFOB(RFIFOW(fd, 2), 6) = '\x00';
            WFIFOB(RFIFOW(fd, 2), 7) = '\x00';

the xaa and x00 and other code what he means or how he work
when i see that i filing like a idiot because is new for me
plz i need some help

 

[Taiga]

This is a hex value, a value written in hexadecimal.

the \x seems to escape the hexadecimal value in the language.

https://en.wikipedia.org/wiki/Hexadecimal

 

[taki4ever]

This is a hex value, a value written in hexadecimal.

the \x seems to escape the hexadecimal value in the language.

https://en.wikipedia.org/wiki/Hexadecimal

yeah i know but why use that type why dant use directely the value in Decimal
like

int k='5887 ';
if(k=16ff){
cout<<"yeah"<<endl;
}

why ??

 

[Future]

yeah i know but why use that type why dant use directely the value in Decimal
like

why ??

That's impossible to answer with the amount of the source provided. From first sight it doesn't look to be used for string composition.