Starting up with some basics of C programming – Hello world- Part 1

phoTo get started with C programming language, there are several basics to grasp in the code structure. In this article, I will elaborate on the anatomy of a simple “hello world” program. The program will just display the words “hello world” through the code. There is also a free book available by Dennis Ritchie, who is the inventor of the C programming language.

Let us see this piece of code :

#include <stdio.h>

#include <stdlib.h>

int main()


   printf("hello world!\n");

   return 0;


The int main () is a function and the line printf(“hello world!\n”); and return 0; are instructions within the function.

The ‘include’ lines #include <stdio.h> and #include <stdlib.h> are files which are included to get some basic functions within the code itself. The aim is to include some built-in functionality into the hello world program.

On your Linux terminal, you just need to save the file as hello.c, set it as executable and run it with the command gcc -o hello hello.c You will notice a file called hello has been created! You can run it as ./hello to find the result ‘hello world’.

Nitin J Mutkawoa

Blogger at | Founding member of | An Aficionado Journey in Opensource & Linux – And now It's a NASDAQ touch!

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