Basic "Hello world" program using c

Hello, World!

Introduction

The C programming language is a general purpose programming language, which relates closely to the way machines work. Understanding how computer memory works is an important aspect of the C programming language. Although C can be considered as "hard to learn", C is in fact a very simple language, with very powerful capabilities.

C is a very common language, and it is the language of many applications such as Windows, the Python interpreter, Git, and many many more.

C is a compiled language - which means that in order to run it, the compiler (for example, GCC or Visual Studio) must take the code that we wrote, process it, and then create an executable file. This file can then be executed, and will do what we intended for the program to do.

Our first program

Every C program uses libraries, which give the ability to execute necessary functions. For example, the most basic function called printf, which prints to the screen, is defined in the stdio.h header file.

To add the ability to run the printf command to our program, we must add following include derivative to our first line of the code:

The second part of the code is the actual code which we are going to write. The first code which will run will always reside in the main function.

Notice that every line in C must end with a semicolon, so that the compiler knows that a new line has started.

Last but not least, we will need to call the function printf to print our sentence.

#include <stdio.h>

#include <conio.h>

int main (  {

printf ("Hello world");

getch ();

return 0;

}

Basic Programs (click here)