topic Re: C compiling in UX in Operating System - HP-UX

C compiling in UX

Henry Chua — Tue, 22 Feb 2005 22:43:28 GMT

Hi Guys,

I have this really fundamental question.. how to u compile a C source code in UX?

e.g. source code "test.c"

#inclde

void main(){

printf("hello world");

}

I try compiling "cc test.c"

but it keep givin me

/usr/ccs/bin/ld: Unexpected end of file in test.c

wats wrong?

Re: C compiling in UX

Biswajit Tripathy — Tue, 22 Feb 2005 23:41:33 GMT

Change

> #inclde
> void main(){
> printf("hello world");
> }

to

#include
int main ()
{
printf ("hello world");
return 0;
}

The real error in you code is the first line (#include).

- Biswajit

Re: C compiling in UX

Muthukumar_5 — Tue, 22 Feb 2005 23:48:06 GMT

Inclusion of header file must be as,

#include

#include
void main(){

printf("hello world");

}

Compile as,

cc -v test.c

It will give more informations.

HTH.

Re: C compiling in UX

Biswajit Tripathy — Tue, 22 Feb 2005 23:51:01 GMT

One nitpick.
It's bad programming practice to use
void main().

In C, main() is designed to return int, so
int main() is what you should be using.

- Biswajit

Re: C compiling in UX

Henry Chua — Wed, 23 Feb 2005 01:00:39 GMT

Been trying to compile this source code but keep getting errors returned.. what have I done wrong?

"
#include
#include
#include
#include
#include

main() {
char fn[]="try.txt";
struct stat info;
int file_descriptor;

if ((file_descriptor = creat(fn, S_IWUSR)) < 0)
perror("creat() error");
else {
if (fstat(file_descriptor, &info) != 0)
perror("fstat() error");
else {
puts("fstat() returned:");
printf(" inode: %d\n", (int) info.st_ino);
printf(" dev id: %d\n", (int) info.st_dev);
printf(" mode: %08x\n", info.st_mode);
printf(" links: %d\n", info.st_nlink);
printf(" uid: %d\n", (int) info.st_uid);
printf(" gid: %d\n", (int) info.st_gid);
}
close(file_descriptor);
unlink(fn);
}
}

"

Re: C compiling in UX

Biswajit Tripathy — Wed, 23 Feb 2005 01:26:58 GMT

Post the compiler error message.
- Biswajit

Re: C compiling in UX

Biswajit Tripathy — Wed, 23 Feb 2005 01:32:44 GMT

I just cut-n-paste your code and it compiled and
ran fine on my HP-UX 11.11 system. What exactly
is the problem you are seeing?

- Biswajit

Re: C compiling in UX

VEL_1 — Wed, 23 Feb 2005 01:43:23 GMT

At the end of C file, give one new line. hope It will solve your problem

Re: C compiling in UX

VEL_1 — Wed, 23 Feb 2005 01:49:54 GMT

In Editor, at the end of C file, give one new line(ENTER) . hope It will solve your problem

Re: C compiling in UX

Biswajit Tripathy — Wed, 23 Feb 2005 02:01:11 GMT

tech123,
C compilers don't usually care anout an extra line at
the end of C file.

- Biswajit

Re: C compiling in UX

Henry Chua — Wed, 23 Feb 2005 03:28:59 GMT

Hi Guys, I am using HPUX10.20b, when I compile this code "cc test.c" it return me:
"cc: "test.c", line 8: error 1716: Automatic aggregate initialization is an ANSI feature."

so I decided to do it this way "cc -Aa test.c"

it then gives me: "
cc: "test.c", line 9: error 1574: Unknown size for "info".
cc: "test.c", line 12: error 1588: "S_IWUSR" undefined.
cc: "test.c", line 19: error 1530: Undefined struct or union.
cc: "test.c", line 19: error 1527: Incompatible types in cast: Must cast from scalar to scalar or to void type.
cc: "test.c", line 20: error 1530: Undefined struct or union.
cc: "test.c", line 20: error 1527: Incompatible types in cast: Must cast from scalar to scalar or to void type.
cc: "test.c", line 21: error 1530: Undefined struct or union.
cc: "test.c", line 21: warning 563: Argument #2 is not the correct type.
cc: "test.c", line 22: error 1530: Undefined struct or union.
cc: "test.c", line 22: warning 563: Argument #2 is not the correct type.
cc: "test.c", line 23: error 1530: Undefined struct or union.
cc: "test.c", line 23: error 1527: Incompatible types in cast: Must cast from scalar to scalar or to void type.
cc: "test.c", line 24: error 1530: Undefined struct or union.
cc: "test.c", line 24: error 1527: Incompatible types in cast: Must cast from scalar to scalar or to void type.

"

Re: C compiling in UX

Peter Godron — Wed, 23 Feb 2005 03:35:32 GMT

Henry,
if you are going to use C more often it may be worthwhile getting the proper C compiler.
Either buy the HP product or use free gcc.
The compiler with the OS is normally only used for kernel compiles, so may not have full functionality.
Regards

Re: C compiling in UX

Henry Chua — Wed, 23 Feb 2005 04:01:20 GMT

Hi Peter,
if this the case, can u advise me where I should go to download the gcc for my hpux10.20b . What should I do to install it?

Re: C compiling in UX

Peter Godron — Wed, 23 Feb 2005 04:52:02 GMT

Hendry,
have a look at :
https://www.beepz.com/personal/merijn/#Downloads
Regards

Re: C compiling in UX

Biswajit Tripathy — Wed, 23 Feb 2005 13:21:14 GMT

Henry,
I tried to compile your code on a 11.11 system that
does not have a ANSI C compiler and I did get the
error you are getting ("Automatic aggregate
initialization is an ANSI feature"). The native C
compiler seems to have a problem with the line

char fn[]="try.txt";

Changing the above line to the following fixed the
problem and the program compiled fine without
ANSI compiler and ran fine.

char *fn = "try.txt;

- Biswajit

Re: C compiling in UX

Henry Chua — Wed, 23 Feb 2005 21:08:45 GMT

Hi Pewter & Biswajit,

Thanks for the feedback, I am trying to install the GNU C compiler now.. but as for the latter, do you see the other errors I have after fixing the first problem? thank u

Best regards
Henry

Re: C compiling in UX

Biswajit Tripathy — Wed, 23 Feb 2005 22:47:13 GMT

Henry wrote:
> do you see the other errors I have after fixing the
> first problem? thank u

Though I did not see the other errors, I think all of
them have one source, the compiler does not know
about the struct stat. As this is defined in
sys/stat.h, my guess is that the header is not
included correctly in your code. Make sure that the
line
#include
in your code starts from the first column of the line
(i.e no spaces before # character).

- Biswajit

Re: C compiling in UX

Peter Godron — Thu, 24 Feb 2005 02:59:18 GMT

Henry,
looking at your new thread postings, I guess you managed to get a copy of the 10.20 gcc code and have installed it.

Can you please assign points to answers and close the thread.

Happy coding!

Regards

Re: C compiling in UX

Henry Chua — Thu, 24 Feb 2005 04:43:48 GMT

Have used an alternate system with better compiler.. will be installing the GCC as guided soon. THanks guys!