Functions of arbitrary parameters

While browsing a c++ faq I came across this comparison with C and found something I either didn't know or am reading wrong.

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[6.11] Is C++ backward compatible with ANSI/ISO C?

Almost.

C++ is as close as possible to compatible with C, but no closer. In practice, the major difference is that C++ requires prototypes, and that f() declares a function that takes no parameters (in C, a function declared using f() can be passed an arbitrary number of parameters of arbitrary types).

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Is this saying that defining a function as something like

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void f();

/*...*/

void f(){
/*...*/
}

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would let one do something like

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f(45, 100);

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or

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f("string", NUM, 2);

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or whatever? If so how do you refer to each argument in the function?

You are thinking of variable argument lists, but here that FAQ is talking about the number and types of parameters being unspecified in the declaration (but they may be specified in the definition).

Oh I see. Thanks