Help. New to Linux. Simple Code. Many Errors.

jat12 · 11-20-2007, 10:08 AM

help. i tried making a simple code on linux.

#include <stdio.h>
int main()
{
printf ("Hello");
}

and I tried compiling it. These errors keep popping up.

a.c:1:19: error: stdio.h: No such file or directory
a.c: In function ‘main’:
a.c:4: warning: incompatible implicit declaration of built-in function ‘printf’
a.c:5:2: warning: no newline at end of file

WHAT'S Wrong??
I'm new to linux environment. please help

jailbait · 11-20-2007, 12:14 PM

stdio.h is provided by the glibc package. There are both source and binary packages which provide glibc. Do you have the glibc source package installed?

What distribution are you running and what package manager are you using?

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Steve Stites

XavierP · 11-20-2007, 01:49 PM

Moved: This thread is more suitable in Programming and has been moved accordingly to help your thread/question get the exposure it deserves.

kav · 11-20-2007, 02:20 PM

Most important is what distro you're using. It's probably one that isn't build friendly out of the box. It should be just as easy as you think. Drop the code in a .c, gcc it, then ./a.out. But you're missing your library.

Ubuntu needs a the build essential packages. Debian I think all you need is gcc and I think the dependencies take care of themselves.

ravi_chobey · 11-20-2007, 11:28 PM

check the gcc version using gcc -v command.If its not there,then download the tar package from gnu.org and configure.Else upgrade your O.S, u must have missed the development tools options while installing that distribution.

jat12 · 11-22-2007, 05:05 AM

i'll first try what you all suggested. thanks.

PAix · 11-22-2007, 08:56 AM

Hi, your bit of code is a classic almost directly taken from page 6 of The C Programming Language by Kernighan & Ritchie.

Code:

#include <stdio.h>
int main()
{
printf ("Hello");
}

However, your code compiles just fine and works ok, so as Kav and Ravi have said it's down to the development environment not being fully installed. Under SUSE linux select from K Menu > YaST (Control Center) > Software Management and enter gcc in the search box. It will likely show one or two items that are needed.

Like Ubuntu, SUSE doesn't load the development tools by default.

PAix

LinuxManMikeC · 11-24-2007, 02:02 AM

Quote:

Originally Posted by jailbait

There are both source and binary packages which provide glibc. Do you have the glibc source package installed?

A source package usually refers to a package containing the full source code of some program or library. What this guy needs is just the headers. These should be in a development package (abbreviated as "devel" on some RPM based distros, not sure about others). Actually on my Fedora system I need two glibc packages in addition to the compiled binary, glibc-headers and glibc-devel. You don't need the whole source code of glibc. Sorry if I sound a bit pedantic, but the last thing we need is a newbie getting lost in the glibc source.

Not sure what distro you use jailbait and I'm not familiar with the package naming conventions of them all, but from what I've seen they make a clear distinction between full source and just headers.