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What is source code in C language?

New programmers often wonder what is source code in C language and what its actual role is. Let's explain it in simple terms. Whenever you create a program, the first code you write is called source code. In the C language, this code is usually saved in a file with a .c extension, such as hello.c. This source code is easily readable and understandable by humans, where C syntax—such as loops, variables, and functions—is used.

Basically, source code is the set of instructions a programmer gives the computer to perform a task. Once you've written your C language source code in a file, it needs to be converted into object code or executable by a compiler (like gcc or Turbo C) so that the computer can run it. The computer simply cannot understand these instructions without changing them, so compiling is necessary.

You can also run your C language source code on an online C Compiler, which improves your logical aptitude. And if you want to know the basic structure of programming, it's important to understand the importance of lines like the main() function and #include.

Tip: Use clean and commented coding when writing source code!

Whenever you write your C language source code, include the necessary comments. This makes the code easier to understand, and if you or someone else sees it in the future, you can easily edit or reuse it. For example:
#include <stdio.h>
int main() {
  printf("Hello, World!");
  return 0;
}