GCC/C Compiler

[Iwanthelp]

Whenever I try to compile "Hello.c" it says:

Hello.c:1:20: error:  stdio.h: No such file or directory
Hello.c: In function ‘main’:
Hello.c:5: warning: incompatible implicit declaration of built-in function ‘printf’
Hello.c:4: warning: return type of ‘main’ is not ‘int’

Any idea how to make it work? And if not, what toher C Compilers(Besides Intel's.) are there for Linux?

[heindsight]

Can you post the code?

[taurus]

Did you install the build-essential package before you compiled your c program?

sudo apt-get update
sudo apt-get install build-essential
gcc -v

[Iwanthelp]

It says the latest version is installed.

sudo apt-get install build-essential
Reading package lists... Done
Building dependency tree       
Reading state information... Done
build-essential is already the newest version.
The following packages were automatically installed and are no longer required:
  libglib1.2ldbl imlib11 libarts1c2a libswscale0 libboost-regex1.34.1
  libartsc0 yafray libavutil49 libdc1394-22 libsdl-erlang wings3d libgtk1.2
  libftgl2 kdelibs-data libsctp1 liblualib50 koffice-data
  libboost-date-time1.34.1 dcraw xdg-user-dirs libavformat52 ruby1.8 blt ruby
  libdar64-4 python-tk libavahi-qt3-1 python-uno gpp openoffice.org-base-core
  lksctp-tools libgsm1 libwps-0.1-1 openoffice.org-emailmerge tcl8.5
  libgtk1.2-common imlib-base blender tk8.4 libavcodec51 tk8.5 gtkglarea5
  liblua50 libruby1.8 libgts-0.7-5 erlang-base
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.

What it says with "gcc -v"

gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.3.2-1ubuntu12' --with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.3 --program-suffix=-4.3 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-mpfr --enable-targets=all --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu12)

He's the code:

#include < stdio.h>

void main()
{
	printf ("\nHello, World!\n");
	}

I typed in "gcc Hello.c" again and it spat out the same error.

[heindsight]

He's the code:

#include < stdio.h>

void main()
{
	printf ("\nHello, World!\n");
	}

I typed in "gcc Hello.c" again and it spat out the same error.

First, you shouldn't have spaces inside <> for the #include.
Secondly, main should return int.

Try changing it to:

#include <stdio.h>

int main()
{
	printf ("\nHello, World!\n");
	return 0;
}

[Iwanthelp]

But the tutorial had it that way...

Okay, it made "a.out" but it won't open by double clicking on it or right click "execute" so I opened the terminal and typed in "a.out" and it says this:

bash: a.out: command not found

[taurus]

./a.out

The current directory is not in your PATH so you need to include the ./ before the name of the program to run it.

[heindsight]

But the tutorial had it that way...

then the tutorial is wrong

[Iwanthelp]

Worked, thanks.

[kuruyiva]

./a.out

The current directory is not in your PATH so you need to include the ./ before the name of the program to run it.

How can I include ./ in .bashrc, I mean how does that line look like can you help me ? Thanks