How can to write a c program without a main()
so i can compile and run it
37  2354 
"Spidey" <am********@gmail.com> wrote in message
news:11**********************@o13g2000cwo.googlegr oups.com... How can to write a c program without a main()
so i can compile and run it
If you are able to write and run such a program,
it, by definition, is not a C program.
-Mike
"Spidey" <am********@gmail.com> writes: How can to write a c program without a main()
so i can compile and run it
Some systems, particularly embedded systems, may not require a main()
function. (I think some Windows implementations may use something
like "WinMain".) Conforming hosted implementations always require
main().
Why do you want to do this? It seems like another "How do I drive
nails without using a hammer?" question.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
In article <ln************@nuthaus.mib.org>,
Keith Thompson <ks***@mib.org> wrote: "Spidey" <am********@gmail.com> writes: How can to write a c program without a main()
so i can compile and run it
Some systems, particularly embedded systems, may not require a main()
function. (I think some Windows implementations may use something
like "WinMain".) Conforming hosted implementations always require
main().
Some compilers and/or linkers have options to designate alternate
entry points -- which would be system specific (and thus non-portable).
Even systems that provide such mechanisms might only allow limited
functionality -- for example, potentially if main() is skipped, then
I/O might not be initialized, or the environment variables might
not be set up properly. Tis thus very much a "use at your own risk"
feature that is outside the boundaries of the C language.
--
Prototypes are supertypes of their clones. -- maplesoft
Though it is idiotic but try this .....:):):):):):):):):)
#define A main(){
A
printf("hello\n");
}
"Joel" <sa*****************@gmail.com> wrote in message
news:11**********************@g14g2000cwa.googlegr oups.com... Though it is idiotic but try this .....:):):):):):):):):)
#define A main(){
A
printf("hello\n");
}
OP asked about a program *without* a 'main()'
function. The above has one. However the
program has undefined behavior due to the
call to 'printf()' with no prototype in scope.
Also note that it doesn't conform to C99, which
requires a return type of 'int'.
-Mike
"Keith Thompson" <ks***@mib.org> wrote in message
news:ln************@nuthaus.mib.org... "Spidey" <am********@gmail.com> writes: How can to write a c program without a main()
so i can compile and run it
Some systems, particularly embedded systems, may not require a main()
function.
Yes. I used an embedded devel system where explicitly declaring the entry
point (it could be "main" if you wanted, but usually wasn't) would eliminate
the initialization code. You didn't get zeroed globals, I/O had to be
initialized by the code, if you wanted to use it, the stack was undeclared,
couldn't return from that code or use exit(), and so on. You needed to either
set up the stack very early (like, first line) with an asm( ) statement, or the
entry could be assembly code. I recall a warning at the top of the page which
outlined was would NOT be done that said something like "If you don't
understand all this, don't do it".
Why do you want to do this? It seems like another "How do I drive
nails without using a hammer?" question.
Nice turn of a phrase there.
- Bill
dear spidey,
there are always rules for the game otherwise things won't go work . C
language has only way as an entry point for a program is main()
function in DOS environment and WinMain () function in Windows
environment.
To my knowledge all C compilers are need to follow this standard, well
you search for some alternative and let me know if you find an answer
Take Care
neo
Spidey wrote:
How can to write a c program without a main()
so i can compile and run it
A function named "main"
Is the one and only thing
A C program needs
--
pete
Mike Wahler <mk******@mkwahler.net> wrote: "Joel" <sa*****************@gmail.com> wrote in message
#define A main(){
A
printf("hello\n");
}
Also note that it doesn't conform to C99, which
requires a return type of 'int'.
Since we're in pedantry mode, it also returns an undefined termination
status to the host environment in C89.
--
Christopher Benson-Manica | I *should* know what I'm talking about - if I
ataru(at)cyberspace.org | don't, I need to know. Flames welcome.
neo wrote
(in article
<11*********************@f14g2000cwb.googlegroups. com>): dear spidey,
there are always rules for the game otherwise things won't go work . C
language has only way as an entry point for a program is main()
function in DOS environment and WinMain () function in Windows
environment.
Do really think C gets is use of main() from DOS? Or are DOS
and Windows the only two platforms you are aware of being used
for C programming?
--
Randy Howard (2reply remove FOOBAR)
"The power of accurate observation is called cynicism by those
who have not got it." - George Bernard Shaw
"Spidey" <am********@gmail.com> wrote in message
news:11**********************@o13g2000cwo.googlegr oups.com... How can to write a c program without a main()
so i can compile and run it
Link against a(ny) library (such as cgic) which defines the main function
for you.
pete said: Spidey wrote:
How can to write a c program without a main()
so i can compile and run it
A function named "main"
Is the one and only thing
A C program needs
Please do not forget
The implementation's role
Sine qua non C.
--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999 http://www.cpax.org.uk
email: rjh at above domain (but drop the www, obviously)
In article <ZU***************@monger.newsread.com>,
Mark B <so***@localbar.com> wrote:
"Spidey" <am********@gmail.com> wrote in message
news:11**********************@o13g2000cwo.googleg roups.com... How can to write a c program without a main()
so i can compile and run it
Link against a(ny) library (such as cgic) which defines the main function
for you.
Or, to put it another way, write a shared library (off topic here, of
course), that is loaded by an existing piece of software that you did not
write.
Lawyers can debate whether this constitutes "writing a program", but for
the rest of us, it's good enough.
"neo" <pa**********@gmail.com> wrote in message
news:11*********************@f14g2000cwb.googlegro ups.com... dear spidey,
there are always rules for the game otherwise things won't go work . C
language has only way as an entry point for a program is main()
function in DOS environment and WinMain () function in Windows
environment.
Really? I write quite a few C programs with entry point
'main()' in a Windows environment.
Whether the host environment is DOS, Windows, or something
else, has no bearing at all on the C entry point function's
name.
To my knowledge all C compilers are need to follow this standard,
Those for hosted implementations claiming conformance must
require one entry point function name: 'main'.
-Mike
Spidey wrote: How can to write a c program without a main()
so i can compile and run it
Maybe the OP wants to compile a module.
you can have modules without main().
gcc -c module.c
produces just the .o (object) file required for linking.
Regards,
Frodo Baggins
"Mike Wahler" <mk******@mkwahler.net> writes: "neo" <pa**********@gmail.com> wrote in message
news:11*********************@f14g2000cwb.googlegro ups.com... dear spidey,
there are always rules for the game otherwise things won't go work . C
language has only way as an entry point for a program is main()
function in DOS environment and WinMain () function in Windows
environment.
Really? I write quite a few C programs with entry point
'main()' in a Windows environment.
Whether the host environment is DOS, Windows, or something
else, has no bearing at all on the C entry point function's
name.
That's true for conforming hosted implementations. I think that some
of the popular implementations under Windows don't qualify, at least
in some modes.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
"Frodo Baggins" <fr*********@gmail.com> writes: Spidey wrote: How can to write a c program without a main()
so i can compile and run it
Maybe the OP wants to compile a module.
you can have modules without main().
gcc -c module.c
produces just the .o (object) file required for linking.
Yes, but the OP specifically asked how to compile *and run* a
*program*.
There's no point in guessing what he meant. If he cares, he can come
back and explain. If he doesn't, neither do I.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
pete wrote: Spidey wrote:
How can to write a c program without a main()
so i can compile and run it
A function named "main"
Is the one and only thing
A C program needs
Understandable,
notwithstanding freestanding
implementations.
Old Wolf wrote: pete wrote:
Spidey wrote:
How can to write a c program without a main()
so i can compile and run it
A function named "main"
Is the one and only thing
A C program needs
Understandable,
notwithstanding freestanding
implementations.
Forget the Obfuscated C Contest, we need a C Haiku Contest.
S.
Spidey wrote: How can to write a c program without a main()
so i can compile and run it
Simply edit the startup code.
which is of course WOT.
Skarmander <in*****@dontmailme.com> wrote: Old Wolf wrote: pete wrote:
Spidey wrote:
How can to write a c program without a main()
so i can compile and run it
A function named "main"
Is the one and only thing
A C program needs
Understandable,
notwithstanding freestanding
implementations.
Forget the Obfuscated C Contest, we need a C Haiku Contest.
Senryu. Or zappai. Not haiku.
Richard
Richard Bos said: Skarmander <in*****@dontmailme.com> wrote:
Old Wolf wrote: > pete wrote:
>
>>Spidey wrote:
>>
>>>How can to write a c program without a main()
>>>so i can compile and run it
>>
>>A function named "main"
>>Is the one and only thing
>>A C program needs
>
> Understandable,
> notwithstanding freestanding
> implementations.
Forget the Obfuscated C Contest, we need a C Haiku Contest.
Senryu. Or zappai. Not haiku.
In this C newsgroup,
Haiku is as haiku does;
This is normative.
--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999 http://www.cpax.org.uk
email: rjh at above domain (but drop the www, obviously)
Well you need to ask this question at gcc newsgroup. The only way to do
this is to modify compiler and libraries. YOu need to tinker with
__main, crt0 or crt1.
regards
VK
On 2005-11-24, hi***********@gmail.com <hi***********@gmail.com> wrote: Well you need to ask this question at gcc newsgroup. The only way to do
this is to modify compiler and libraries. YOu need to tinker with
__main, crt0 or crt1.
__main? I think you mean _start
[which is, of course, off-topic for this newsgroup]
In article <sl********************@random.yi.org>,
Jordan Abel <jm****@purdue.edu> wrote: On 2005-11-24, hi***********@gmail.com <hi***********@gmail.com> wrote: Well you need to ask this question at gcc newsgroup. The only way to do
this is to modify compiler and libraries. YOu need to tinker with
__main, crt0 or crt1.
__main? I think you mean _start
[which is, of course, off-topic for this newsgroup]
As is anything else that is the least bit interesting.
(And you know I'm right. Go ahead and deny it, but you know I'm right)
Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>): [which is, of course, off-topic for this newsgroup]
As is anything else that is the least bit interesting.
Feel free to unsubscribe if you find clc boring. please.
--
Randy Howard (2reply remove FOOBAR)
"The power of accurate observation is called cynicism by those
who have not got it." - George Bernard Shaw
In article <00*****************************@news.verizon.net> ,
Randy Howard <ra*********@FOOverizonBAR.net> wrote: Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
[which is, of course, off-topic for this newsgroup]
As is anything else that is the least bit interesting.
Feel free to unsubscribe if you find clc boring. please.
What give ya dat idea?
Since just about everything here is O/T, it's not boring.
Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>): In article <00*****************************@news.verizon.net> ,
Randy Howard <ra*********@FOOverizonBAR.net> wrote: Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
[which is, of course, off-topic for this newsgroup]
As is anything else that is the least bit interesting.
Feel free to unsubscribe if you find clc boring. please.
What give ya dat idea?
You saying it, probably.
--
Randy Howard (2reply remove FOOBAR)
"The power of accurate observation is called cynicism by those
who have not got it." - George Bernard Shaw
Randy Howard said: Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
In article <00*****************************@news.verizon.net> ,
Randy Howard <ra*********@FOOverizonBAR.net> wrote: Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
> [which is, of course, off-topic for this newsgroup]
As is anything else that is the least bit interesting.
Feel free to unsubscribe if you find clc boring. please.
What give ya dat idea?
You saying it, probably.
Given his track record, what makes you think he was correct?
--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999 http://www.cpax.org.uk
email: rjh at above domain (but drop the www, obviously)
In article <dm**********@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>,
Richard Heathfield <in*****@invalid.invalid> wrote: Randy Howard said:
Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
In article <00*****************************@news.verizon.net> ,
Randy Howard <ra*********@FOOverizonBAR.net> wrote:
Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
>> [which is, of course, off-topic for this newsgroup]
>
> As is anything else that is the least bit interesting.
Feel free to unsubscribe if you find clc boring. please.
What give ya dat idea?
You saying it, probably.
Given his track record, what makes you think he was correct?
You guys really are pathetic.
Although I shouldn't have to point this out, the part that you (both)
deleted explained exactly why CLC is anything but boring.
Kenny McCormack wrote: In article <dm**********@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>,
Richard Heathfield <in*****@invalid.invalid> wrote:
Randy Howard said:
Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
In article <00*****************************@news.verizon.net> ,
Randy Howard <ra*********@FOOverizonBAR.net> wrote:
>Kenny McCormack wrote
>(in article <dm**********@yin.interaccess.com>):
>
>
>>>[which is, of course, off-topic for this newsgroup]
>>
>>As is anything else that is the least bit interesting.
>
>Feel free to unsubscribe if you find clc boring. please.
What give ya dat idea?
You saying it, probably.
Given his track record, what makes you think he was correct?
You guys really are pathetic.
Although I shouldn't have to point this out, the part that you (both)
deleted explained exactly why CLC is anything but boring.
Hi Kenny,
You don't seem to get it. Us 'guys' are not pathetic and if you think we
are, who cares what you think? And we don't take ourselves too seriously
most of the time. We tend to take the group comp.lang.c seriously
though. We respect the group and we expect you to. If you cannot, please
go away.
--
Joe Wright
"Everything should be made as simple as possible, but not simpler."
--- Albert Einstein ---
Joe Wright <jw*****@comcast.net> writes: Kenny McCormack wrote:
[snip] Hi Kenny,
You don't seem to get it. Us 'guys' are not pathetic and if you think
we are, who cares what you think? And we don't take ourselves too
seriously most of the time. We tend to take the group comp.lang.c
seriously though. We respect the group and we expect you to. If you
cannot, please go away.
Gentlemen, you're giving him exactly what he wants: attention. KM has
shown repeatedly that he will not listen to advice, polite requests,
insults, or anything else. He will continue to be a troll, and he
will continue to try to disrupt this newsgroup.
I suggest that the newsgroup will be better of if we all ignore him.
If you use a killfile, add him to it. If you don't, resist the
temptation to engage him in conversation.
This will mean letting him have the last word. That doesn't imply
agreement, merely that he's not worth responding to.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
What U really mean
Do U mean that U can change entry point for C program from main ()
function to some else.
If U can then tell me how?
Randy Howard <ra*********@FOOverizonBAR.net> wrote: Kenny McCormack wrote
(in article <dm**********@yin.interaccess.com>):
[which is, of course, off-topic for this newsgroup]
As is anything else that is the least bit interesting.
Feel free to unsubscribe if you find clc boring. please.
Ah, but he doesn't. Regardless of topicality, he can still abuse c.l.c
to discuss the topic that will always be the only one that truly
interests him: himself.
Richard re********@hotmail.com writes: void main()
Please watch your language. 8-)}
Seriously, I can't see the message to which you're replying. If that
was meant to be a reply to the question in the subject, it's wrong for
at least two reasons.
Please <http://cfaj.freeshell.org/google/>.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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