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comp.lang.c FAQ list · Question 11.13

Q: But what about main's third argument, envp?

A: It's a non-standard (though common) extension. If you really need to access the environment in ways beyond what the standard getenv function provides, though, the global variable environ is probably a better avenue (though it's equally non-standard).

References: ISO Sec. G.5.1
H&S Sec. 20.1 pp. 416-7

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