, etc... which are interpreted languages which right after install you get a interpreter which you can type your code in and gets executed on the go (or you can put it on a source file an change the execution permition ands gets executed), C is compiled language which means to start using it must first put some code in a source file and then call the compilers command to compile the source code into a executable and then you execut it.
Example : the classic hello world, put the code below inside a file por example c_program.c
int main (int argc, char **argv)
printf ("Hello World\n");
and then open the terminal and issue this command :
$ gcc -o my_program c_program.c
I'm not trying to judge you but, it seems that its your first day in GNU/Linux Universe, first try to work with the shell, issuing some basics commands, and then try one of the scriting languages a mentioned at the beginning (or C if are brave enougth), there a tons of documents, tutotrial, howtos online for you study and learn, and folks here at LQ are always ready to help! Personaly I would recommend try to learn ruby, its a awesome language, it has a very nice syntax and best object oriented language I ever saw. But C is a great language too, actualy its my favourite programming language.
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EDIT : Added the hello world snipet.