gbdk_playground/z_gbdk_playground_original/hello_world/README.md

# Hello World
<div style="text-align: center"><img src="screenshot.png" alt="" /></div>

Prints `Hello World!` to the screen using GBDK's `printf` function.

## Source
Includes `<gb/gb.h>`. This file contains all Gameboy specific functions.
It's the one you're going to use the most.


  

```c
#include <gb/gb.h>

```







Includes `<stdio.h>` it contains funtions for basic file/console input and
output.


  

```c
#include <stdio.h>

```







A C program always starts by calling the `main()` function. If you are
unfamiliar with this I suggest reading up on C first.


  

```c
void main() {

```







Prints the string `Hello World!` to the screen. Internally it uses the
background layer to do so as you can see in the VRAM of your favorite
emulator.


  

```c
    printf("Hello World!");

```







Using `\n` you can create a new line. In this case it is used to create some
space between the previous sentence and the next.


  

```c
    printf("\n\nPress Start");
}



```