R4: Functions

Question 1

Functions Syntax

Answer 1

fn main() {
    print_labeled_measurement(5, 'h');
}

fn print_labeled_measurement(value: i32, unit_label: char) {
    println!("The measurement is: {value}{unit_label}");
}

Question 2

Statements

Answer 2

are instructions that perform some action and do not return a value.

Example:
~~~
let x = 3;
~~~

Question 3

Expressions

Answer 3

Expressions evaluate to a resultant value. Let’s look at some examples.

Example:
~~~
{
let x = 3;
x + 1
}
~~~