Unable to use gcc

sujitkulkarni · 02-19-2011, 08:46 AM

Hey, I am trying to use gcc. I need to compile a C prog. But I am unable to do. I have done this:

Code:

sujit@sujit-desktop:~$ gcc -Wall test.c
gcc: test.c: No such file or directory
gcc: no input files
sujit@sujit-desktop:~$

I even googled for this. But I think I am making some mistakes in specifying path. Plz assist!!

goodhombre · 02-19-2011, 08:56 AM

Hi,

test if the the file is in the current directory before compiling it:

Code:

ls test.c

sujitkulkarni · 02-19-2011, 08:59 AM

umm i tried! but it says:

Code:

sujit@sujit-desktop:~$ ls test.c
ls: cannot access test.c: No such file or directory

well, the file test.c is on my desktop! so any clue?

goodhombre · 02-19-2011, 09:05 AM

Hi,

Likely you are in the you home directory.
Try:

Code:

cd Desktop
ls test.c

You ca find out which is the current working directory by using pwd command.

To switch to you home directory use ~

Code:

cd ~
cd Desktop
ls test.c
gcc -Wall test.c

sujitkulkarni · 02-19-2011, 09:07 AM

Thanks it worked! THX A LOT!!!!!!!!!!!!

Code:

sujit@sujit-desktop:~$ cd Desktop
sujit@sujit-desktop:~/Desktop$ ls test.c
test.c
sujit@sujit-desktop:~/Desktop$ gcc -Wall test.c
sujit@sujit-desktop:~/Desktop$

NOW HOW TO RUN THE PROG?

sujitkulkarni · 02-19-2011, 09:15 AM

Also tell me, does conio.h and void main() work? coz it is giving me error, and its asking for int main() instead of void main().

Code:

/* FILE: test.c */
#include <stdio.h>

void main()
{
	printf("Hi!!!!!!!!!");
	
}

brianL · 02-19-2011, 09:15 AM

Try this:

Code:

gcc -Wall test.c -o test
./test

goodhombre · 02-19-2011, 09:17 AM

Hi,

Try :

Code:

chmod +x a.out
./a.out

You can specify the name of the output file by using -o option.

Code:

gcc -Wall test.c -o test.out

In most on the cases you have to make file executable using chmod +x , see man chmod form more details.

goodhombre · 02-19-2011, 09:23 AM

Quote:

Originally Posted by sujitkulkarni

Also tell me, does conio.h and void main() work? coz it is giving me error, and its asking for int main() instead of void main().

conio.h doesn't exist under linux , you can use system("clear"); instead of clrscr().
Regarding void main , that is just a warning message, you can ignore him.

Aquarius_Girl · 02-19-2011, 09:26 AM

Quote:

Originally Posted by brianL

Try this:

Code:

gcc -Wall test.c -o test
./test

Wow! I never knew you were a programmer too!

goodhombre · 02-19-2011, 09:27 AM

brianL · 02-19-2011, 09:52 AM

Quote:

Originally Posted by Anisha Kaul

Wow! I never knew you were a programmer too!

That's about my limit as far as programming goes. I can edit "Hello World" programs (any language) to output "Hello Brian, you handsome devil!".

ntubski · 02-19-2011, 02:11 PM

Quote:

Originally Posted by brianL

That's about my limit as far as programming goes. I can edit "Hello World" programs (any language) to output "Hello Brian, you handsome devil!".

Any language, even BF?

Code:

 ++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.

jayjwa · 02-19-2011, 03:59 PM

What about LOLCODE?

sujitkulkarni · 02-20-2011, 12:27 AM

thanks to everybody for answering me!
So the moral of the story is,
u get o/p by issuing ./filename or
chmod +x a.out
./a.out
commands. isnt it?
Also can I know how and why a.out is created?