實驗6 繼承和多型

實驗1：

a.h

#ifndef a_h
#define a_h#include
"base.h
"class a:public
base;
int sub(int m,int n);
};#endif

b.h

#ifndef b_h
#define b_h#include
"base.h
"class b:public
base;
int mul(int m,int n);
};#endif

c.h

#ifndef c_h
#define c_h#include
"base.h
"class c:public
base;
int div(int m,int n);
};#endif

base.h

#ifndef base_h
#define base_h
class
base;
int add(int m,int n);
protected
: 
intm;
intn;
};#endif

main.cpp

#include#include
"a.h
"#include
"b.h
"#include
"c.h
"using
namespace
std;
intmain()

截圖：

實驗2：

vehicle.h

#ifndef vehicle_h

#define vehicle_h

class

vehicle;

#endif

vehicle.cpp

#include#include
"vehicle.h
"using
namespace
std;
vehicle::vehicle(
int m,int
w):maxspeed(m),weight(w)
vehicle::~vehicle()
void vehicle::run()
void vehicle::stop()
int vehicle::showmaxspeed()
int vehicle::showweight()

bicycle.h

#ifndef bicycle_h
#define bicycle_h#include
"vehicle.h
"class bicycle:virtual
public
vehicle;
#endif

bicycle.cpp

#include#include
"bicycle.h
"using
namespace
std;
bicycle::bicycle(
int h,int m,int
w):height(h),vehicle(m,w)
bicycle::~bicycle()
int bicycle::showheight()

motorcar.h

#ifndef motorcar_h
#define motorcar_h#include
"vehicle.h
"class motorcar:virtual
public
vehicle; 
private
: 
intseatnum;
};#endif

motorcar.cpp

#include#include
"motorcar.h
"using
namespace
std;
motorcar::motorcar(
int s,int m,int
w):seatnum(s),vehicle(m,w)
motorcar::~motorcar()

motorcycle.h

#ifndef motorcycle_h
#define motorcycle_h#include
"motorcar.h
"#include
"bicycle.h
"class motorcycle:public bicycle,public
motorcar;
#endif

motorcycle.cpp

#include#include
"motorcycle.h
"using
namespace
std;
motorcycle::motorcycle(
int h,int s,int m,int
w):bicycle(h,m,w),motorcar(s,m,w),vehicle(m,w)
motorcycle::~motorcycle()

main.cpp

#include#include
"motorcycle.h
"using
namespace
std;
intmain()

截圖：

實驗3：

faction.h

#ifndef faction_h

#define faction_h

class

faction

;#endif

faction.cpp

#include "
faction.h
"#include 
using
namespace
std;
//建構函式 
faction::faction():top(0), bottom(1
) //
建構函式的過載 
faction::faction(int t0):top(t0), bottom(1
) //
建構函式的過載 
faction::faction(int t0,int
b0):top(t0), bottom(b0)
//輸出函式
void
faction::show() 
faction faction::
operator+(faction &f0) 
faction faction::
operator-(faction &f0) 
faction faction::
operator*(faction &f0) 
faction faction::
operator/(faction &f0) 
//比較大小函式
void faction::compare(faction &f1) 
else
}int
faction::gettop()
intfaction::getbottom()

ifaction.h

#include "
faction.h
"#include 
using
namespace
std;
class ifaction:public
faction;
ifaction(
int t):faction(t,1
){};
ifaction():faction(
0,1){};
void
ishow()
b/=a;
t/=a;
if (b == 0
) 
else
if (t == 0
) 
else
if ( t
else
cout 
<< b << "("
<< t+b << "/"
<< b << ")"
<
} 
};

main.cpp

#include #include 
"ifaction.h
"using
namespace
std;
intmain()

這個報錯說using namespace std;那一行錯了，我不太懂……把派生類刪了也是那個地方報錯。

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實驗6 繼承和多型

繼承和多型

繼承和多型

繼承和多型

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