V Book | Home | Translations | V-LANG 0.4.10
The simplest way to try V is to use V's interactive Playground.
We will use the Playground throughout this book to practice the concepts in the book. Code snippets with the play icon will let you try them yourself in the Playground.
fn main() {
println('Hello, World!')
}
In V, functions are declared with the fn keyword, followed by the name of the function (in this case main), the parameters to the function, if any (in this case there aren't any) inside (), then an opening and closing curly brace, { }. The curly braces marks the start and end of a function body.
The body of the function is where we put the statements. In our function main we only have one statement a call to the function println().
To execute a function we use its name followed by an opening and closing parenthesis. Inside the parenthesis we pass the corresponding value to each of the function's parameters (if any are required)
We use the term parameters for the variables that are listed in the function definition, the parameters list. They act as placeholders for the values (arguments) that will be passed when the function is called. While arguments are the actual values or data that you pass to a function or method when you call it.