fork download
copy 
  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4.  
  5. using namespace std;
  6.  
  7. class Shape {
  8. protected:
  9. 	float width, height;
  10. public:
  11. 	Shape(float width = 0, float height = 0) {
  12. 		this->width = width;
  13. 		this->height = height;
  14. 	}
  15. 	friend ostream &operator<< (ostream &os, Shape &s) {
  16. 		os << s.width << " x " << s.height;
  17.  
  18. 		return os;
  19. 	}
  20. };
  21. class Triangle: public Shape {
  22. private:
  23. public:
  24. 	Triangle(float width = 0, float height = 0):Shape(width, height) {
  25. 	}
  26. 	void nhap() {
  27. 		cout << "Nhap canh day: "; cin >> width;
  28. 		cout << "Nhap chieu cao: "; cin >> height;
  29. 	}
  30. 	float area() {
  31. 		return 0.5 * width * height;
  32. 	}
  33. };
  34. class Rectangle: public Shape {
  35. private:
  36. public:
  37. 	Rectangle(float width = 0, float height = 0):Shape(width, height) {
  38. 	}
  39. 	float area() {
  40. 		return width * height;
  41. 	}
  42. 	void nhap() {
  43. 		cout << "Nhap chieu dai: "; cin >> width;
  44. 		cout << "Nhap chieu rong: "; cin >> height;
  45. 	}
  46. };
  47.  
  48. int main () {
  49. 	Triangle tamgiac;
  50. 	Rectangle chunhat;
  51.  
  52. 	cout << "Nhap kich thuoc tam giac:\n"; tamgiac.nhap();
  53. 	cout << "Nhap kich thuoc cua hinh chu nhat:\n"; chunhat.nhap();
  54.  
  55. 	cout << "\n> Tam giac kich thuoc " << tamgiac << ". Co dien tich " << tamgiac.area();
  56. 	cout << "\n> Hinh chu nhat kich thuoc " << chunhat << ". Co dien tich " << chunhat.area();
  57.  
  58. 	return 0;
  59. }
  60.  
Success #stdin #stdout 0.01s 5524KB
comments (?)
stdin
copy 
2 6
4 8
stdout
copy 
Nhap kich thuoc tam giac:
Nhap canh day: Nhap chieu cao: Nhap kich thuoc cua hinh chu nhat:
Nhap chieu dai: Nhap chieu rong: 
> Tam giac kich thuoc 2 x 6. Co dien tich 6
> Hinh chu nhat kich thuoc 4 x 8. Co dien tich 32
https://ideone.com/VahTur
BTH3.2.a
language:
C++14 (clang 8.0)
created:
2 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!