Hi, I'm currently taking a data structures course in C, and my teacher
said that function prototypes are not allowed in any of our code. He
also said that no professional programmers use function prototypes. This
kind of bugged me, because from other people's code that I've seen in
the past, almost all of them use function prototypes. The following also
bugged me. Let's say you have a file called main.c with only the main
function, and includes hello.h, to use functions within hello.c. So
hello.h should contain prototypes for the functions in hello.c, so when
main.c is compiled, there won't be any warnings. If there aren't any
prototypes in the header file, my compiler would assume the function
called with main() is extern and returns an int. I tried to explain this
to my teacher, but the answer he gave me is that I should just put the
whole function within the header file and not have any other *.c files.
I haven't seen anyone put whole functions within header files before. Am
I wrong about this or is my teacher wrong? Thank you.
Aug 22 '07
73  3472 
"Steph Barklay" <do**@spam.mewr ote in message
news:sl******** ***********@nos pam.invalid...
Hi, I'm currently taking a data structures course in C, and my teacher
said that function prototypes are not allowed in any of our code. He
also said that no professional programmers use function prototypes. This
kind of bugged me, because from other people's code that I've seen in
the past, almost all of them use function prototypes. The following also
bugged me. Let's say you have a file called main.c with only the main
function, and includes hello.h, to use functions within hello.c. So
hello.h should contain prototypes for the functions in hello.c, so when
main.c is compiled, there won't be any warnings. If there aren't any
prototypes in the header file, my compiler would assume the function
called with main() is extern and returns an int. I tried to explain this
to my teacher, but the answer he gave me is that I should just put the
whole function within the header file and not have any other *.c files.
I haven't seen anyone put whole functions within header files before. Am
I wrong about this or is my teacher wrong? Thank you.
Your instructor is pathetic. He is talking about little toy programs, the
kind you write in the very class you are enrolled in. My guess is that he
has never seen the code for a real program in his entire life.
On Wed, 22 Aug 2007 19:42:38 -0700, osmium wrote:
>
"Steph Barklay" <do**@spam.mewr ote in message
news:sl******** ***********@nos pam.invalid...
>Hi, I'm currently taking a data structures course in C, and my teacher
said that function prototypes are not allowed in any of our code. He
also said that no professional programmers use function prototypes. This
kind of bugged me, because from other people's code that I've seen in
the past, almost all of them use function prototypes. The following also
bugged me. Let's say you have a file called main.c with only the main
function, and includes hello.h, to use functions within hello.c. So
hello.h should contain prototypes for the functions in hello.c, so when
main.c is compiled, there won't be any warnings. If there aren't any
prototypes in the header file, my compiler would assume the function
called with main() is extern and returns an int. I tried to explain this
to my teacher, but the answer he gave me is that I should just put the
whole function within the header file and not have any other *.c files.
I haven't seen anyone put whole functions within header files before. Am
I wrong about this or is my teacher wrong? Thank you.
Your instructor is pathetic. He is talking about little toy programs, the
kind you write in the very class you are enrolled in. My guess is that he
has never seen the code for a real program in his entire life.
I can't see any use in doing so in even the smallest program. (If
a program is *really* a little toy program, there is no real
reason to split it across several source files, either, unless to
teach how that is done; but I think that teaching to do that badly
is worse that not to teach it at all.)
--
Army1987 (Replace "NOSPAM" with "email")
No-one ever won a game by resigning. -- S. Tartakower
On Wed, 22 Aug 2007 17:21:03 -0700, user923005 wrote:
On Aug 22, 4:12 pm, Steph Barklay <d...@spam.mewr ote:
>Hi, I'm currently taking a data structures course in C, and my teacher
said that function prototypes are not allowed in any of our code. He
also said that no professional programmers use function prototypes. This
kind of bugged me, because from other people's code that I've seen in
the past, almost all of them use function prototypes. The following also
bugged me. Let's say you have a file called main.c with only the main
function, and includes hello.h, to use functions within hello.c. So
hello.h should contain prototypes for the functions in hello.c, so when
main.c is compiled, there won't be any warnings. If there aren't any
prototypes in the header file, my compiler would assume the function
called with main() is extern and returns an int. I tried to explain this
to my teacher, but the answer he gave me is that I should just put the
whole function within the header file and not have any other *.c files.
I haven't seen anyone put whole functions within header files before. Am
I wrong about this or is my teacher wrong? Thank you.
Your teacher is criminally insane. Notify the authorities right away.
On the other hand, this is my evil handiwork:
#ifdef _MSC_VER
#include <windows.h>
#else
#include <unistd.h>
#endif
#include "searchr.c"
#include "search.c"
[snip enormous list]
#include "time.c"
#include "validate.c "
On the other hand, each of those files has headers with prototypes and
there are headers with prototypes at the top even of this file.
Some compilers can inline more aggressively if you make every file
available as a single giant block of source code.
At least their name ends with .c, so that one will know that extra
care shall be taken not to define anything twice.
--
Army1987 (Replace "NOSPAM" with "email")
No-one ever won a game by resigning. -- S. Tartakower
#ifdef _MSC_VER
#include <windows.h>
#else
#include <unistd.h>
#endif
#include "searchr.c"
#include "search.c"
#include "thread.c"
#include "searchmp.c "
#include "repeat.c"
#include "next.c"
#include "nexte.c"
#include "nextr.c"
#include "history.c"
#include "quiesce.c"
#include "evaluate.c "
#include "movgen.c"
#include "make.c"
#include "unmake.c"
#include "hash.c"
#include "attacks.c"
#include "swap.c"
#include "boolean.c"
#include "utility.c"
#include "valid.c"
#include "probe.c"
#include "book.c"
#include "analyze.c"
#include "annotate.c "
#include "bench.c"
#include "data.c"
#ifndef _MSC_VER
#include "dgt.c"
#endif
#include "drawn.c"
#include "edit.c"
#include "epd.c"
#include "epdglue.c"
#include "evtest.c"
#include "init.c"
#include "input.c"
#include "interupt.c "
#include "iterate.c"
#include "learn.c"
#include "main.c"
#include "option.c"
#include "output.c"
#include "ponder.c"
#include "preeval.c"
#include "resign.c"
#include "root.c"
#include "setboard.c "
#include "test.c"
#include "time.c"
#include "validate.c "
Some compilers can inline more aggressively if you make every file
available as a single giant block of source code.
just a little off topic:
Would the compilation also be faster if all headers were included in a gaint
header file ?
osmium said:
<snip>
I almost always write such programs "Pascal style", which obviates the
prototypes.
No, not really. A prototype is a function declaration that lists the
types of its parameters. For function definitions /not/ to do this,
they must either be written K&R style or with empty parentheses. Both
of these styles are very rare nowadays. It is almost certain that you
are in fact using prototypes, even when programming "Pascal style".
<snip>
--
Richard Heathfield <http://www.cpax.org.uk >
Email: -www. +rjh@
Google users: <http://www.cpax.org.uk/prg/writings/googly.php>
"Usenet is a strange place" - dmr 29 July 1999
"Richard Heathfield" writes:
osmium said:
<snip>
>I almost always write such programs "Pascal style", which obviates the
prototypes.
No, not really. A prototype is a function declaration that lists the
types of its parameters. For function definitions /not/ to do this,
they must either be written K&R style or with empty parentheses. Both
of these styles are very rare nowadays. It is almost certain that you
are in fact using prototypes, even when programming "Pascal style".
As you should know by now, I am not a big fan of using word games in
discussions involving newbies.
osmium said:
"Richard Heathfield" writes:
>osmium said:
<snip>
>>I almost always write such programs "Pascal style", which obviates
the prototypes.
No, not really. A prototype is a function declaration that lists the
types of its parameters. For function definitions /not/ to do this,
they must either be written K&R style or with empty parentheses. Both
of these styles are very rare nowadays. It is almost certain that you
are in fact using prototypes, even when programming "Pascal style".
As you should know by now, I am not a big fan of using word games in
discussions involving newbies.
As you should know by now, using proper terminology in the proper way is
not a matter of word games, but a matter of correctness.
--
Richard Heathfield <http://www.cpax.org.uk >
Email: -www. +rjh@
Google users: <http://www.cpax.org.uk/prg/writings/googly.php>
"Usenet is a strange place" - dmr 29 July 1999
"osmium" <r1********@com cast.netwrites:
"Richard Heathfield" writes:
>osmium said:
<snip>
>>I almost always write such programs "Pascal style", which obviates the
prototypes.
No, not really. A prototype is a function declaration that lists the
types of its parameters. For function definitions /not/ to do this,
they must either be written K&R style or with empty parentheses. Both
of these styles are very rare nowadays. It is almost certain that you
are in fact using prototypes, even when programming "Pascal style".
As you should know by now, I am not a big fan of using word games in
discussions involving newbies.
And as you should know, *any* thread that Mr Heathfield contributes to
descends to just that.
I still his recall "there is no such thing as a global variable in C" blather.
Keith Thompson wrote:
>
Steph Barklay <do**@spam.mewr ites:
Hi, I'm currently taking a data structures course in C, and my teacher
said that function prototypes are not allowed in any of our code. He
also said that no professional programmers use function prototypes. This
[...]
to my teacher, but the answer he gave me is that I should just put the
whole function within the header file and not have any other *.c files.
I haven't seen anyone put whole functions within header files before. Am
I wrong about this or is my teacher wrong? Thank you.
Your teacher is very very very very very wrong.
Ask him to explain section 4.5 of K&R2 (that's Kernighan & Ritchie,
_The C Programming Language_, 2nd Edition) (it starts on page 81),
which absolutely contradicts your teacher's claims.
"And what makes those guys such experts at C programming?" :-) :-)
--
+-------------------------+--------------------+-----------------------+
| Kenneth J. Brody | www.hvcomputer.com | #include |
| kenbrody/at\spamcop.net | www.fptech.com | <std_disclaimer .h|
+-------------------------+--------------------+-----------------------+
Don't e-mail me at: <mailto:Th***** ********@gmail. com>
pete wrote:
>
Steph Barklay wrote:
Hi, I'm currently taking a data structures course in C, and my teacher
said that function prototypes are not allowed in any of our code. He
also said that no professional programmers use function prototypes.
That implies, or very nearly implies,
that professional programmers don't write C programs
with more than one file of source code.
.... nor use any standard library functions other than the non-varadic
ones that return int. (Bye bye malloc and printf, among others.)
It also suggests that your teacher has never
written a C program with more than one file of source code,
and thus is a neophyte programmer.
How old is this kid?
Even neophytes can #include <stdio.hon day one.
I hope that you're mistaken about what he said.
I think/hope "ditto" applies to everyone reading clc. (Though I
wouldn't hold my breath waiting for the answer to that.)
--
+-------------------------+--------------------+-----------------------+
| Kenneth J. Brody | www.hvcomputer.com | #include |
| kenbrody/at\spamcop.net | www.fptech.com | <std_disclaimer .h|
+-------------------------+--------------------+-----------------------+
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