C: 'Hello, World!' Program

In this lesson, we will learn how to write a simple 'Hello, World!' C program, compile and run it.

Open a text editor, say, Gedit, and create a C file called hello.c

				gedit hello.c
			

Type the following C code (which prints 'Hello, World!') into it and save it

				
				#include <stdio.h>

				int main() {
					printf("Hello, World!");
					return 0;	
				}
				
			

Compile hello.c

				gcc hello.c
			

A default executable file called a.out is created. Execute it by typing the following command

				./a.out
			

The line 'Hello, World!' will be printed into the terminal.

					gcc hello.c -o hello
				

					./hello