> be khatere hamin fekr nemikonam marbot be ANSI ya POSIX bashe! > be in dalaiel estefade nemikonan !
1.)what are you basing this on? 2.)have you read the POSIX specifications? Regards Arash __________________________________________________ Be one who knows what they don't know, Instead of being one who knows not what they don't know, Thinking they know everything about all things. http://www.partow.net ----- Original Message ----- From: "Mohammad Reza Ghorbani" <[EMAIL PROTECTED]> To: "GNU/Linux in Iran" <[EMAIL PROTECTED]> Sent: Saturday, December 13, 2003 3:17 PM Subject: Re: [linuxiran] [OT] C programming, variable size array > On Saturday 13 December 2003 00:51, Aryan Ameri wrote: > > exit(EXIT_SUCCESS); > > /* > > proper posix way to exit. > > */ > > return 0; > > > > Which one do you mean is the proper POSIX way of exiting? the exit > > function? or return 0? I always put return 0; though my incompetent > > instructor doesn't even put it. But I haven't seen the exit() function > > before, well, I haven't studdied the POSIX standard !!! > > > > Also, what does sizeof() do? from the code it seems to me it is used for > > counting. Am I right? > > > > You use if (((char)tempValue) == EOF) to determine EOF. I > > > > > > The way I have learned, I use the getchar() function to do so, as in > > while ( (tmp = getchar() ) != EOF ) > > > > Any advantages to any method? > > > > Also now that I am here, let me abuse your knowledge, and ask one more > > thing. I just learned the gets() function, and when I use it on my gcc > > 3.2, it gives me a "the gets function is dangerous. It shouldn not be > > used" warning. I guess gets is now deprecated, but it is still being > > tought in our univ. Do you know what is the correct way of inputting a > > string of characters, not using gets ? > > > > Thanks again, very very much. > > > > Cheers > > Salam . . . > Aval mazerat mikham ke fingilish minivisam ! :( chon zabanam kheili bad > hastesh ! ama mohem nist : > > dar morede soale avalet ke farghe "exit(EXIT_SUCCESS);" ba "return 0" bood > bayad begam ke agar dar akhare barname estefade beshan TAGHRIBAN hich farghi > ba ham nadaran.ama betore koli az "exit(int)" baraye khoroje gheyre normal ya > "ABNORMAL" estefade mishe.va baraye manteghe barname nevisi dorost nist > darhalate normal az on estefade konim.(hatman midoni har meghdari ke main() > return kone dar ENVAIROMENT VARIABLE e '$?' zakhire mishe ke ba shell > mitooni befahmi ke barname ba che error_codi kharej shode). > ama ye farghe kocholo baham daran ke momkene kasi az "exit(EXIT_SUCCESS);" > be jaie rerurn 0;"estefade kone (ama man jaie nadidam" : > bebin vaghti barnameie ma tamom mishe ye seri etefagh barash miyofde: > masalan: > 1. agar TEMP FILE dasfte bashi ke khodet close nakarde bashi on "FILE *" close > mishe. > 2.ya buffere STDIO, flush mishe va gheire ! > va momkene yeki bekhad az vasate barname NORMAL kharej she ! :-o > return faghat male vaghtie ke reside bashi be akhare block! > vali akhare barname hich farghi baham nadaran! > ye chize dige ham begam : > bebin ye farghi mohem return ba exit dare : > return KeyWord hastesh va exit Function ! > Performance KeyWord ha az Function ha kheili bishtare . > elatesham in ke KeyWord OVER_HEAD nadare vali function dare! > to C/C++ performance barname baromon kheili moheme! > baraye hamin ba return 0 barnamaro tamom mikonim! > be khatere hamin fekr nemikonam marbot be ANSI ya POSIX bashe! > be in dalaiel estefade nemikonan ! > -------------------------------------------------------------------------- --------------------------------------------------------- > ye chize dige baraye EOF begam ! > mamolan to linux rasm bar ine ke barname haie ke az Terminal mikhan faghat > vorodie chand khati begiran (MESLE PHP interpreter) vgahti kare user tamom > shod,user bayad ye "CONTROL + C" bezane. > in jori chi mishe ? > ye Signal be barname ferestade mishe be esme SIGINIT ke barname nevis in > signalo handel(catch) mikone! yani to barnamsh mige vaghti in signal resid ye > kari bokon! > agar dost dashti fekr mikonam az in ghabliyat estefade koni barnamat khoshgel > mishe! > chon nemidonam cheghadara ba signal ashnaie bishtar tozih nemidam! vali > agar khasti mitoni behem begi ke baz barat begam! > -------------------------------------------------------------------------- -------------------------------------------------------- > ye chize dige : > gets tole vorodi ro chek nemikone va ta vaghti ke user '\n' type kone vorodi > migire! khob in kheili bade! momkene to ye 'char str[20]' tarif koni vali > tosh 45 CHAR berzan.in jori 25 khoneie badie hafezat kharab mishe! > va aslan malom nist chi be sare barnamat miyad! > agar esme BUFER_OVERFLOW ro shenide bashi bayad begam ke hameie in > exploit ha to interenet baraye deghat nakrdan be hamin moshkelat e! > > baraye hamin agar to dashte bashi : > char str[20]; > behtare benivisi: > fgets(str ,20 ,STDIN); > > in khat daghighan kare hamono mikone vali kheili behtare ! > -------------------------------------------------------------------------- -------------------------------------------------------- > dar akhar pish nahad mikonam : > http://www.advancedlinuxprogramming.com > ro bekhoooonin ! > ------------------------------------------------------------------------- > Ghorbanat > Mohammad Reza > 7 : 39 am > > > > _______________________________________________ > bna-linuxiran mailing list > [EMAIL PROTECTED] > http://mail.nongnu.org/mailman/listinfo/bna-linuxiran > > _______________________________________________ bna-linuxiran mailing list [EMAIL PROTECTED] http://mail.nongnu.org/mailman/listinfo/bna-linuxiran
