[mattlyons]

For class we use VI to write our code on Linux. We then use the built in gcc compiler to compile our code. I just finished my code and it is finally compiling through gcc without any errors but I there is supposed to be output and I cannot see it.

My question is, is there a way to actually run the code on gcc?

And then, what is your choice of compiler for C?

[jimblumberg]

Usually you run the program from the command line where you compiled it. Example: if the program name is myprogram the you would type ./myprogram notice the "./" normally with Linux the current directory is not in the search directory so you need the "./" to indicate that the program is in the current directory.

As for which compiler, for Linux you will usually use gcc for compiling C program. If you want an IDE then I would suggest Code::Blocks.

Jim

This post has been edited by jimblumberg: 29 March 2011 - 02:35 PM

[baavgai]

I use... gcc!

The steps are something like this.

Make a C file, we'll call it foo.c:

#include <stdio.h>

int main() {
	printf("Can you see me now!\n");
	return 0;
}

Compile it, here with some helpful flags:

baavgai@DIC:~/Dev/C$ gcc -Wall -o foo foo.c

Run it:

baavgai@DIC:~/Dev/C$ ./foo 
Can you see me now!
baavgai@DIC:~/Dev/C$

That's about it.

[mattlyons]

Hmm, I compiled it fine with just this:

gcc foo.c

Then when I try to run it with this:

./foo.c

it gives me this error:

-bash: ./foo.c: Permission denied

Any idea why?

[jimblumberg]

With the commands that you used to compile this program you should have a file named a.out in the directory. If there is a file name a.out you will run your program by typing ./a.out

Edit You may want to check out this link on compiling with gcc.

Jim

This post has been edited by jimblumberg: 29 March 2011 - 04:17 PM

[mattlyons]

./a.out worked. Thanks for both of yours help.