File: sample.rs
   1 struct Rectangle {
   2     width: u32,
   3     height: u32,
   4 }
   5 
   6 fn main() {
   7     let rect1 = Rectangle { width: 30, height: 50 };
   8 
   9     println!(
  10         "The perimeter of the rectangle is {} pixels.",
  11         perimeter(&rect1)
  12     );
  13     println!(r#"This line contains invalid utf8:  "�����"#;
  14 }
  15 
  16 fn area(rectangle: &Rectangle) -> u32 {
  17     rectangle.width * rectangle.height
  18 }
  19 
  20 fn perimeter(rectangle: &Rectangle) -> u32 {
  21     (rectangle.width + rectangle.height) * 2
  22 }
  23 
  24 // Tab alignment:
  25 /*
  26         Indent
  27         1       2       3       4
  28 1       ?
  29 22      ?
  30 333     ?
  31 4444    ?
  32 55555   ?
  33 666666  ?
  34 7777777 ?
  35 88888888        ?
  36 */