Hello World!
When you learn a new programming language it is customary to do the program Hello World!. My first programming language was BASIC and I didn't do the classic Hello World!, I did a program that displayed my name on screen.
My first Hello World!, like that of many other programmers, was the one from the book: The C Programming Language, also known as K&R, by Brian W. Kernigham and Dennis M. Ritchie.
I think it is quite appropriate to follow tradition and start with a Hello World!, and nothing better than making it in C.
#include <stdio.h>
int main(void)
{
printf("Hello, World!");
return 0;
}