Beginning Rust: From Novice to Professional

© Carlo Milanesi 2018

Carlo MilanesiBeginning Rusthttps://doi.org/10.1007/978-1-4842-3468-6_1

1. Printing on the Terminal

Carlo Milanesi¹ 

(1)

Bergamo, Italy

 

In this chapter, you will learn:

• How to write and run your first program in the Rust Language

• How to output texts and numbers on the terminal

• How to write a small script that makes more readable the output of the compiler

• How to write comments in your code

How to Start

The smallest valid Rust program is:

fn main(){}

Of course, it does nothing. It just defines an empty function named “main”. By “function” we mean a set of instructions that does something and that has been given a name.

The "fn" word is shorthand for “function”. The "main" word is the name of the function . The round parentheses contain ...