# Built-in functions

FZLang provides built-in functions that are available in every program.

## Exit: `exit`

```
fn exit(uint code)
```

Takes an unsigned integer argument and exits the program with the specified code.

## Print to stdout: `printline`

```
fn printline(value)
```

Accepts any value and writes it to standard output. Primitive values are printed directly according to their types. Objects are printed as `obj<...>`, where `...` is a list of their field values. Each field is printed with its type and value in the format `T<V>`, where `T` is the type name and `V` is the current value.