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c++(类继承)示例[仅用于弱弱的博主巩固知识点用哦,不好勿喷]

测试代码:

Animals.h:

 1 #pragma once
 2 #include<string>
 3 class Animals
 4 {
 5 protected:
 6     std::string Food;
 7     int Weight;
 8     int Intake;
 9     double Velocity;
10 public:
11     Animals(const std::string &fd="none",int w=0,int n=0,double v=0.0);
12     virtual void Speaking();
13     void Swimming();
14     void show(int)const;
15     virtual ~Animals();
16 };
17 
18 class Fish :Animals
19 {
20 private:
21     std::string Colour;
22 public:
23     Fish(const std::string &cr = "none", const std::string &fd = "none", int w = 0, int n = 0, double v = 0.0);
24     Fish(const std::string &cr, Animals &tp);
25     void Appear()const;
26     void show()const;
27     void Speaking();
28 
29 };

Animals.cpp:

 1 #include "stdafx.h"
 2 #include "Animals.h"
 3 #include<iostream>
 4 
 5 Animals::Animals(const std::string  &fd, int w, int n,double v):Food(fd),Weight(w),Intake(n), Velocity(v)
 6 {}
 7 
 8 void Animals::Speaking()
 9 {
10     std::cout << "......" << std::endl;
11 }
12 
13 void Animals::Swimming()
14 {
15     std::cout <<"++++++"<< Velocity << "m/s" <<"++++++"<< std::endl;
16 }
17 
18 void Animals::show(int p) const
19 {
20     std::cout << "I want eatting ";
21     for (int i = 0; i < p; i++)
22         std::cout << Food<<"! ";
23     std::cout << std::endl;
24 }
25 
26 Animals::~Animals()
27 {
28 }
29 
30 
31 Fish::Fish(const std::string & cr, const std::string & fd, int w, int n, double v) :Animals(fd,w,n,v)
32 {
33     Colour = cr;
34 }
35 
36 Fish::Fish(const std::string & cr, Animals & tp):Animals(tp),Colour(cr)
37 {}
38 
39 void Fish::Speaking()
40 {
41     std::cout << "Booo Booo!" << std::endl;
42 }
43 
44 void Fish::Appear() const
45 {
46     std::cout << Colour << std::endl;
47 }
48 
49 void Fish::show() const
50 {
51     std::cout << "Food: " << Food << std::endl;
52     std::cout << "Weight: " << Weight << std::endl;
53     std::cout << "Intake: " << Intake << std::endl;
54     std::cout << "Velocity: " << Velocity <<" m/s"<< std::endl;
55     std::cout << "Colour: " << Colour << std::endl;
56 }

ConsoleApplication.cpp:

 1 #include "stdafx.h"
 2 #include "Animals.h"
 3 #include<iostream>
 4 using namespace std;
 5 int main()
 6 {
 7     Animals p0("shrimp", 20, 10, 1.0);
 8     Fish b0("Red and White", "Coral", 10, 5, 0.5);
 9     p0.show(3);
10     p0.Speaking();
11     p0.Swimming();
12     cout << endl ;
13     b0.show();
14     cout << "Now I must speaking: ";
15     b0.Speaking();
16     cout << endl ;
17     Fish b1("Blue", p0);
18     b1.show();
19     cout << "Now I must speaking: ";
20     b1.Speaking();
21     return 0;
22 }

 

运行结果:

posted @ 2018-04-21 20:19  迷途纸鸢  阅读(195)  评论(0编辑  收藏  举报