Your First Project

Starting out with C3, you probably want to get a feel for the language, without using the integrated build system.

Open a text editor and enter the following in a file you call hello_world.c3:

module hello_world;
import std::io;

fn int main(char[][] argv) 
    io::println("Hello World!");
    return 0;

Now in the terminal type:

$ c3c compile hello_world.c3
$ ./hello_world
Hello World

A real project

Once you go beyond simple files, you want to create a real project. Do so by entering c3c init hello_world.

You will get the following structure:

$ c3c init hello_world 
$ tree .
└── hello_world
    ├── project.json
    ├── LICENSE
    ├── build
    ├── docs
    ├── lib
    ├── resources
    ├── src
    │   └── main.c3
    └── test        

Enter main.c3 and write the same code as above, then anywhere in the project structure:

$ c3c run
Hello World