Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!mcvax!unido!ztivax!tumuc!lan!foessmei From: foessmei@lan.informatik.tu-muenchen.dbp.de (Reinhard Foessmeier) Newsgroups: comp.lang.c Subject: Re: Probably an easy or dumb question Summary: "scanf" needs an address for each datum Keywords: scan Message-ID: <727@tuminfo1.lan.informatik.tu-muenchen.dbp.de> Date: 11 Aug 89 07:28:59 GMT References: <1949@leah.Albany.Edu> Sender: news@lan.informatik.tu-muenchen.dbp.de Reply-To: foessmei@lan.informatik.tu-muenchen.dbp.de (Reinhard Foessmeier) Organization: Inst. fuer Informatik, TU Muenchen, FR Germanujo Lines: 34 In article <1949@leah.Albany.Edu> rds95@leah.Albany.Edu (Robert Seals) writes: >...is it workable to pass only the base address of an array >to "?scanf" and have it convert into successive memory locations? > >int d[4]; > >scanf("%d %d %d %d", d); > >I guess the question is whether "scanf" uses the format string or >the number of arguments to determine how many thingies to convert. "scanf" uzas la formatan vicon; "scanf" uses the format string; it ^gi ne scias la nombron de argumentoj; doesn't know about the # of args; but tamen via propono ne funkcias. what you propose doesn't work all the La kawzo estas, ke "scanf" volas same. The reason is that "scanf" wants propran adreson por ^ciu legata an address of its own for every datum dateno. ^Car la adreso de unu read. Since the address of a single elemento de estas distingebla de element is not distinguishable from the la adreso de vektoro, "scanf" ne address of an array, "scanf" would be scius kion fari el at a loss with something like scanf(" %d %d %d", d1, d2); d1 kaj d2 povus esti deklaritaj kiel d1 and d2 might be declared as int d1[2], d2[1]; aw or int d1[1], d2[2]; "scanf" absolute ne scias, kiu el "scanf" has no way of telling which of la du deklaracio antawiris. these declarations was used. Reinhard F\"ossmeier, Technische Univ. M\"unchen | Vivu foessmeier@infovax.informatik.tu-muenchen.dbp.de | la gefiloj [ { relay.cs.net | unido.uucp } ] | de niaj gepatroj!