C++ in 24 Hours, Sams Teach Yourself by Rogers Cadenhead & Jesse Liberty

Author:Rogers Cadenhead & Jesse Liberty [Cadenhead, Rogers]
Language: eng
Format: epub
Publisher: Pearson Education
Published: 2016-08-01T21:00:00+00:00

* * *

1: #include <iostream>

2:

3: class Tricycle

4: {

5: public:

6: Tricycle();

7: // copy constructor and destructor use default

8: int getSpeed() const { return *speed; }

9: void setSpeed(int newSpeed) { *speed = newSpeed; }

10: Tricycle operator=(const Tricycle&);

11:

12: private:

13: int *speed;

14: };

15:

16: Tricycle::Tricycle()

17: {

18: speed = new int;

19: *speed = 5;

20: }

21:

22: Tricycle Tricycle::operator=(const Tricycle& rhs)

23: {

24: if (this == &rhs)

25: return *this;

26: delete speed;

27: speed = new int;

28: *speed = rhs.getSpeed();

29: return *this;

30: }

31:

32: int main()

33: {

34: Tricycle wichita;

35: std::cout << "Wichita's speed: " << wichita.getSpeed()

36: << std::endl;

37: std::cout << "Setting Wichita's speed to 6 ..." << std::endl;

38: wichita.setSpeed(6);

39: Tricycle dallas;

40: std::cout << "Dallas' speed: " << dallas.getSpeed()

41: << std::endl;

42: std::cout << "Copying Wichita to Dallas ..." << std::endl;

43: wichita = dallas;

44: std::cout << "Dallas' speed: " << dallas.getSpeed()

45: << std::endl;

46: return 0;

47: }

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