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From: | eds AT gravi DOT physik DOT uni-jena DOT de (E. Schmidt) |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Simple beginner questions |
Date: | 3 Dec 1997 19:32:12 GMT |
Organization: | Friedrich-Schiller-University Jena, Germany |
Lines: | 29 |
Message-ID: | <664c3s$2rq$1@fsuj19.rz.uni-jena.de> |
NNTP-Posting-Host: | hpxs2.tpi.uni-jena.de |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Hallo World! 1. How to define user function with variable number of arguments? I simply want(ed) to define my error handler printing some formatted message and making some other things like closing files... 2. How to close the file, if I don't know if it is opened or closed? Only file variable FILE * fp; is achivable. 3. Is it important in C to free the memory in the inverse allocation order ? p1=malloc(100); p2=malloc(200); ... free(p2); free(p1); What happens with pieces of memory which are set free in "wrong" order? For above example free(p1); p1=malloc(50); Would these 50 bytes be allocated in the memory of previous malloc(100) ? Thanks a lot Eduard
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