Where do I compile C codes?

Question

What is the extension of C program

Answer 1

Gcc is one option.

Answer 2

I do not know what extension you mean.C Compilator is able to compile c source code according to standard which is belong to it.There are extensions mainly in gcc compilator which is under the amendments to the approved standards like c95.Try to chcek out the link here:https://en.m.wikipedia.org/wiki/ANSI_C