fork(2) download
copy 
  1. use std::io::stdin;
  2. use std::io::BufRead;
  3. use std::io::BufReader;
  4.  
  5. mod figures {
  6.  
  7. 	pub trait Figure {
  8. 		fn area(&self) -> f64;
  9. 		fn printName(&self) {
  10. 			print!("Figure = {} ", self.name());
  11. 		}
  12. 		fn name(&self) -> &'static str;
  13. 	}
  14.  
  15. 	pub struct Rectangle {
  16. 		w: f64,
  17. 		h: f64,
  18. 	}
  19.  
  20. 	impl Rectangle {
  21. 		pub fn new(width: f64, height: f64) -> Rectangle {
  22.             Rectangle { w: width, h: height }
  23.         }
  24. 	}
  25.  
  26. 	impl Figure for Rectangle {
  27. 		fn name(&self) -> &'static str {
  28.         	"Rectangle"
  29. 		}
  30. 		fn area(&self) -> f64 {
  31. 			self.h * self.w
  32. 		}
  33. 	}
  34.  
  35. 	pub struct Square {
  36. 		rectangle: Rectangle,
  37. 	}
  38.  
  39. 	impl Square {
  40. 		pub fn new(size: f64) -> Square {
  41. 			Square { rectangle: Rectangle { w: size, h: size } }
  42. 		}
  43. 	}
  44.  
  45. 	impl Figure for Square {
  46. 		fn name(&self) -> &'static str {
  47.         	"Square"
  48. 		}
  49. 		fn area(&self) -> f64 {
  50. 			self.rectangle.area()
  51. 		}
  52. 	}
  53.  
  54. 	pub struct Ellipse {
  55. 		rectangle: Rectangle,
  56. 	}
  57.  
  58. 	impl Ellipse {
  59. 		pub fn new(a: f64, b: f64) -> Ellipse {
  60. 			Ellipse { rectangle: Rectangle { w: a, h: b } }
  61. 		}
  62. 	}
  63.  
  64. 	impl Figure for Ellipse {
  65. 		fn name(&self) -> &'static str {
  66.         	"Ellipse"
  67. 		}
  68. 		fn area(&self) -> f64 {
  69. 			self.rectangle.area() * 3.1415
  70. 		}
  71. 	}
  72. }
  73.  
  74. fn main() {
  75. 	use figures::{Figure, Rectangle, Square, Ellipse};
  76. 	let v: [&Figure; 3] = [
  77. 		&Rectangle::new(2.0, 3.0),
  78. 		&Square::new(4.0),
  79. 		&Ellipse::new(2.0, 3.0)
  80. 		];
  81. 	for i in v.iter() {
  82. 		i.printName();
  83. 		println!(", area: {}", i.area());
  84.     }
  85. }
  86.  
Success #stdin #stdout 0s 4532KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Figure = Rectangle , area: 6
Figure = Square , area: 16
Figure = Ellipse , area: 18.849
https://ideone.com/7qLtr6
language:
Rust (rust 1.56)
created:
6 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!