JimFawcett.github.io/CodeSnap-Inheritance.h.html at master · JimFawcett/JimFawcett.github.io · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
<!----------------------------------------------------------------------------
  CodeSnap-Inheritance.htm
  Published 18 May 2017
  Jim Fawcett, CSE687 : Object Oriented Design, Summer 2017

  Note:
  - Markup characters in the text part, enclosed in <pre>...</pre> have to be
    replaced with escape sequences, e.g., < becomes &lt; and > becomes &gt;
  - Be careful that you don't replace genuine markup characters with escape
    sequences, e.g., everything outside of the <pre>...</pre> section.
----------------------------------------------------------------------------->
  <html>
  <head>
    <title>CodeSnap-Inheritance</title>
    <script src="js/ScriptsUtilities.js"></script>
    <script src="js/ScriptsTemplate.js"></script>
    <script src="js/ScriptsKeyboard.js"></script>
    <script src="js/ScriptsMenuCpp.js"></script>
    <link rel="stylesheet" href="css/StylesTemplate.css" />
    <link rel="stylesheet" href="css/StylesMenu.css" />
    <style>
      h3 {
        font-weight: normal;
      }
    </style>
  </head>
  <body id="github" onload="initializeMenu()">
    <nav>
      <div id="navbar"></div>
    </nav>
    <a id="Next" href="CodeSnap-Inheritance.cpp.html">N</a>
    <a id="Prev" href="CodeSnap-Inheritance.txt.html">P</a>

    <navKeys-Container>
      <nav-Key id="sKey" onclick="toggleSwipeEvents()">S</nav-Key>
      <nav-Key id="rKey" onclick="location.reload()">R</nav-Key>
      <nav-Key id="tKey" onclick="scrollPageTop()">T</nav-Key>
      <nav-Key id="bKey" onclick="scrollPageBottom()">B</nav-Key>
      <nav-Key id="hKey" onclick="helpWin()">H</nav-Key>
      <nav-Key id="pKey" onclick="loadPrev()">P</nav-Key>
      <nav-Key id="nKey" onclick="loadNext()">N</nav-Key>
    </navKeys-Container>

    <h3>
      <a href="CodeSnap-Inheritance.h.html">Soldiers.h</a>,
      <a href="CodeSnap-Inheritance.cpp.html">Soldiers.cpp</a>,
      <a href="CodeSnap-Inheritance.txt.html">Soldiers.txt</a>,
      <a class="disable" href="#">Code folder</a>,
      <a href="Inheritance.html">Inheritance webpage</a>
    </h3>
    <div class="indent">
      This code illustrates how to build and use a polymorphic hierarchy of classes.
    </div>
    <hr />
    <pre class="codeSnap">
#ifndef SOLDIERS_H
#define SOLDIERS_H
/////////////////////////////////////////////////////////////////////////////////
// Soldiers.h - demonstrates inheritance                                       //
//                                                                             //
// Jim Fawcett, Summer Short Course, Su2016                                    //
/////////////////////////////////////////////////////////////////////////////////
/*
 * Illustrates flexability afforded by polymorphic substitution.
 * The global show function accepts a reference to any instance with
 * class derived from Soldier, e.g., Officer, Sergeant, or Private.
 * It then dynamically dispatches to the appropriate functions
 * Soldier::salute() and Soldier::equipment().
*/
#include &lt;string&gt;
#include &lt;vector&gt;
#include &lt;iostream&gt;
#include "Utilities.h"

class Gear
{
public:
  using Name = std::string;
  Gear(const Name& name);
  ~Gear();
  Name name();
protected:
  Name name_;
};

class Person
{
public:
  using Name = std::string;
  Person(const Name& name);
  void eat();
  void sleep();
  Name name();
  virtual ~Person();
protected:
  Name name_;
};

class Soldier : public Person
{
public:
  using Equipment = std::vector&lt;Gear&gt;;
  using Rank = std::string;
  Soldier(const Name& name, const Rank& rank="private");
  virtual void salute() = 0;
  Rank rank() { return rank_; }
  void add(const Gear& gear);
  Equipment& equipment();
private:
  Equipment equip_;
  Rank rank_;
};

class Officer : public Soldier
{
public:
  Officer(const Name& name, const Rank& rank="Captain");
  virtual void salute();
};

class Sergeant : public Soldier
{
public:
  Sergeant(const Name& name);
  virtual void salute();
};

class Private : public Soldier
{
public:
  Private(const Name& name);
  virtual void salute();
};

void show(Soldier& s);

#endif
</pre>
    <!--<div class="photo">
    <img src="pictures/CSTstrip.jpg" width="100%" />
  </div>-->
    <info-bar></info-bar>
  </body>
  </html>