But I can't use all these nonstandard, system-dependent functions, because my program has to be ANSI compatible!
You're out of luck. Either you misunderstood your requirement, or it's an impossible one to meet. ANSI/ISO Standard C simply does not define ways of doing these things. (POSIX defines a few.) It is possible, and desirable, for most of a program to be ANSI-compatible, deferring the system-dependent functionality to a few routines in a few files which are rewritten for each system ported to.
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This page by Steve Summit // Copyright 1995 // mail feedback