Type conversion

Type conversion

[Adam Luchjenbroers]

What are the C/C++ functions for converting between variable types. 

ATM I need to be able to convert a long to an int. But I thought it would be 
good to find out about the others while I'm here.

Re: Type conversion

[Glynn Clements]

Adam Luchjenbroers wrote:

> What are the C/C++ functions for converting between variable types. 
> 
> ATM I need to be able to convert a long to an int. But I thought it would be 
> good to find out about the others while I'm here.

Conversion between numeric types is handled by "casts" (which are a
language feature) rather than explicit functions, i.e.

	int i;
	long l;
	...
	i = (int) l;

If you weren't aware of type casts, you probably need to get a book on
C.

You can't realistically learn a language from a combination of
trial-and-error and asking questions on mailing lists. Primarily
because, for many of the things which you need to learn, you won't
realise that you need to learn them until you've learnt them.

-- 
Glynn Clements <glynn.clements@virgin.net>

Re: Type conversion

[Adam Luchjenbroers]

> If you weren't aware of type casts, you probably need to get a book on
> C.

Is there a good book you could recommend.

> You can't realistically learn a language from a combination of
> trial-and-error and asking questions on mailing lists. Primarily
> because, for many of the things which you need to learn, you won't
> realise that you need to learn them until you've learnt them.

I've learned alot from various projects where I've worked with code already 
given to me and I've absorbed the techniques I've seen used. That said, there 
would still be many techniques I don't know.

Re: Type conversion

[Suriya Narayanan M S]

On Friday 28 June 2002 17:14, Adam Luchjenbroers wrote:
  > > If you weren't aware of type casts, you probably need to get a book on
  > > C.
  > 
  > Is there a good book you could recommend.
  > 

The  C Programming Language (or some other name)
by Brian W. Kernighan and Dennis M. Ritchie

C++ (I don;t know the name)
by Bjarne Stoustrup

  > > You can't realistically learn a language from a combination of
  > > trial-and-error and asking questions on mailing lists. Primarily
  > > because, for many of the things which you need to learn, you won't
  > > realise that you need to learn them until you've learnt them.
  > 
  > I've learned alot from various projects where I've worked with code already 
  > given to me and I've absorbed the techniques I've seen used. That said, there 
  > would still be many techniques I don't know.

Bye,
Suriya Narayanan M S

-- 
Guru Brahma Gurur Vishnu
Gurur Dhevo Maheshwaraha
Gurur Saakshaath Parabramha
Thasmai Shree Gurave Namaha

Public key at www.keyserver.net
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Re: Type conversion

[Flavio de Ayra Mendes]

> On Friday 28 June 2002 17:14, Adam Luchjenbroers wrote:
>  > > If you weren't aware of type casts, you probably need to get a
>  > >book on  C.
>  >
>  > Is there a good book you could recommend.
>  >
>
> The  C Programming Language (or some other name)
> by Brian W. Kernighan and Dennis M. Ritchie
>
> C++ (I don;t know the name)
> by Bjarne Stoustrup
(...)

The C++ Programming Language
by Bjarne Stroustrup



flv
http://h4.locked.org

Re: Type conversion

[Marius Nita]

On Fri, Jun 28, 2002 at 09:14:23PM +0930, Adam Luchjenbroers wrote:
> 
> > If you weren't aware of type casts, you probably need to get a book on
> > C.
> 
> Is there a good book you could recommend.

K&R is pretty much the defacto standard for learning the language:
http://www.amazon.com/exec/obidos/ASIN/0131103628/qid=1025280640/sr=8-1/ref=sr_8_1/102-5246061-6069731

If you want a UNIX programming book in C:
http://www.amazon.com/exec/obidos/ASIN/0201563177/qid=1025281187/sr=1-1/ref=sr_1_1/102-5246061-6069731

> > You can't realistically learn a language from a combination of
> > trial-and-error and asking questions on mailing lists. Primarily
> > because, for many of the things which you need to learn, you won't
> > realise that you need to learn them until you've learnt them.
> 
> I've learned alot from various projects where I've worked with code already 
> given to me and I've absorbed the techniques I've seen used. That said, there 
> would still be many techniques I don't know.

Casting is a very fundamental concept. :) Also, learning things in the wrong
order could hurt you later. Read a book; it's a good thing.

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Re: Type conversion

[Graydon Smith]

Suriya Narayanan M S wrote:
>
>C++ (I don;t know the name)
>by Bjarne Stoustrup
>

Surprisingly enough, it too is called:

The C++ Programming Language
by Bjarne Stroustrup.

and I do believe the latest is the 3rd edition, but there maybe more.

--
Graydon Smith

"I never let my schooling interfere with my education."
- Mark Twain