Basic C++ questions

[webfan]

1. How many types of copy constructor in C++?

2. Will compiler-generated copy constructor do bitwise or memberwise
copying?

[Phlip]

webfan wrote:

1. How many types of copy constructor in C++?

2. Will compiler-generated copy constructor do bitwise or memberwise
copying?

Guessing from 2, the answer to 1 is "compiler-generated or
programmer-supplied."

The answer to 2 is "memberwise".

Is this for a quiz or something?

--
Phlip
http://www.greencheese.us/ZeekLand <-- NOT a blog!!!

[Victor Bazarov]

webfan wrote:

1. How many types of copy constructor in C++?

If you refer to possible signatures, then two.

2. Will compiler-generated copy constructor do bitwise or memberwise
copying?

The latter. What book are you reading that doesn't explain those
basic elements of the language?

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[Gernot Frisch]

1. How many types of copy constructor in C++?

2. Will compiler-generated copy constructor do bitwise or memberwise
copying?

Is homework of you?

[Ron Natalie]

Victor Bazarov wrote:

webfan wrote:

>1. How many types of copy constructor in C++?

If you refer to possible signatures, then two.

Actually, it can be more. You can have defaulted
args for the other parameters.

>

>2. Will compiler-generated copy constructor do bitwise or memberwise
copying?

The latter. What book are you reading that doesn't explain those
basic elements of the language?

Nothing trully works "bitwise" in C++. The smallest unit of
operation is a byte.

[Victor Bazarov]

Ron Natalie wrote:

Victor Bazarov wrote:

>webfan wrote:

>>1. How many types of copy constructor in C++?

If you refer to possible signatures, then two.

Actually, it can be more. You can have defaulted
args for the other parameters.

>>

>>2. Will compiler-generated copy constructor do bitwise or memberwise
copying?

The latter. What book are you reading that doesn't explain those
basic elements of the language?

Nothing trully works "bitwise" in C++. The smallest unit of
operation is a byte.

I think & and | and ^ operators work bitwise in C++. That's why they
are called bitwise.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[Ron Natalie]

>>>

Nothing trully works "bitwise" in C++. The smallest unit of
operation is a byte.

I think & and | and ^ operators work bitwise in C++. That's why they
are called bitwise.

But they work on something no smaller than a char.

Actually, with bitfields you can get to smaller items than a char,
but in general bytes are the smallest entity.

[Kai-Uwe Bux]

Ron Natalie wrote:

Victor Bazarov wrote:

>webfan wrote:

[snip]

>>2. Will compiler-generated copy constructor do bitwise or memberwise
copying?

The latter. What book are you reading that doesn't explain those
basic elements of the language?

Nothing trully works "bitwise" in C++. The smallest unit of
operation is a byte.

I think, under the as-if rule, an implementation is allowed to copy,say, a
char or an unsigned int bitwise as long as it makes sure that at the end,
all bits have been copied :-)
Best

Kai-Uwe Bux

[Someone]

Ron Natalie wrote:

>

>>>>
Nothing trully works "bitwise" in C++. The smallest unit of
operation is a byte.

I think & and | and ^ operators work bitwise in C++. That's why they
are called bitwise.

But they work on something no smaller than a char.

Actually, with bitfields you can get to smaller items than a char,
but in general bytes are the smallest entity.

No bird is as small as a fly-bird. Actually, some fly-birds are as
small, but in general birds are bigger than fly-birds.