uman

Ah, that's what I was asking. I'm quite aware there are pointers in C, I was asking if there was func(T& foo, T& bar); and things like that. I guess not.

DaWei

Kirk's example will not work as a C program.

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Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code.
Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

kirkl_uk

Yeah, I hold my hands up to that. But anyway, the concept of what I said was right.

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kirkl_uk

Navid

Thanks for all the help

grumpy

Incorrect.

C++ has both concepts. C only has pointers.

uman

They ought to add references, I really like them.

grumpy

Such a weighty argument to justify the complexity of adding a new feature to C

IIRC, it was debated by the C standards committee during development of the 1999 C standard. They decided against adding references as the only things most C programmers would want to do with them could be done with pointers.

uman

Yes, but I think it just looks so much nicer to see something like rather than But I suppose it all depends on how you look at it. I suppose, come to think of it, that it's unnecessary.

Oh, and on a semi-related note, is a pointer-to-function to f(T&); of the same type as one to f(T); ?

grumpy

You can achieve that with a macro, if you think about it.
In C, there is no such thing as a reference type, so it is not possible to have a pointer to function that accepts a reference argument.

In C++, a pointer to a function f(T&) is of different type from a pointer to a function f(T).
[PHP]
typedef int ((*func1)(T &));
typedef int ((*func2)(T));

int f(T&);
int f(T);

int main()
{
func1 x(f);
func2 y(f);
if (x == y) // This comparison will cause a compiler error: func1 cannot be converted into a func2
{
whatever();
}
}
[/PHP]

[Oh, the joys of cross-fertilisation between C and C++ forums].

uman

Thanks for the info.