Installing "C" on Ubuntu 18.04 LTS

Question

I typed the "Hello, World" program in the Ubuntu text editor.
The file, 'hello' was saved to the documents folder, which I verified, is there.

However, the "c" compiler, version 7.4.0-1, cannot find 'hello.'
Moreover, the program 'find' cannot find it either.
I would appreciate any help you can give me.

Save it to your Home directory. Otherwise you'll need to provide path to this file. — Pilot6, Aug 26 '19 at 17:36
Would you post the commands you use, and the ls of you Documents/ directory? — schrodingerscatcuriosity, Aug 26 '19 at 17:45
@Pilot6 Why is that? I can compile a file in a subdir without a full path. — schrodingerscatcuriosity, Aug 26 '19 at 17:48
Anyway you need some path. You can't compile file hello in your Documents by running gcc hello. — Pilot6, Aug 26 '19 at 17:50
adminred@adminred:~/Documentos$ gcc foo.c and a.out foo.c — schrodingerscatcuriosity, Aug 26 '19 at 18:18
@guillermochamorro You run it form a directory where is you file located. OP is running from ~. — Pilot6, Aug 26 '19 at 18:24
Ah, yes, as OP didn't mention from where he is issuing the command I just assumed he was on the same directory and hence I thought you too, but also he says that find can't find the file... — schrodingerscatcuriosity, Aug 26 '19 at 18:28
OP wrote that he created the file in Documents using text editor, then opened a terminal and tried to compile. So gcc didn't know where to look. So either a path, or cd. — Pilot6, Aug 26 '19 at 18:32

score 3 · Answer 1 · answered Aug 26 '19 at 17:54

Welcome to Ask Ubuntu!

Make sure you are in the same directory in terminal as is your file hello.c. Type cd /path/to/your_folder/ in terminal to go to it.

Then, gcc hello.c -o helloout should compile it to the output file helloout. To execute the compiled code, type ./helloout.

Note: If I left the code file hello without the .c extension, gcc says

file not recognized: Unrecognized file format

Follows the example I tested (hello.c).

#include <stdio.h>

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

Installing "C" on Ubuntu 18.04 LTS

1 Answers1