C++
#include
using namespace std;
class stock1
{
public:
void Sell()
{
cout << "股票1卖出" << endl;
}
void Buy()
{
cout << "股票1买入" << endl;
}
};
class stock2
{
public:
void Sell()
{
cout << "股票2卖出" << endl;
}
void Buy()
{
cout << "股票2买入" << endl;
}
};
class stock3
{
public:
void Sell()
{
cout << "股票3卖出" << endl;
}
void Buy()
{
cout << "股票3买入" << endl;
}
};
class NationalDebt1
{
public:
void Sell()
{
cout << "国债1卖出" << endl;
}
void Buy()
{
cout << "国债1买入" << endl;
}
};
class Realty1
{
public:
void Sell()
{
cout << "房地产1卖出" << endl;
}
void Buy()
{
cout << "房地产1买入" << endl;
}
};
class Fund
{
private:
stock1* gupiao1;
stock2* gupiao2;
stock3* gupiao3;
NationalDebt1* guozhai;
Realty1* fangdichan;
public:
Fund()
{
gupiao1 = new stock1();
gupiao2 = new stock2();
gupiao3 = new stock3();
guozhai = new NationalDebt1();
fangdichan = new Realty1();
}
void BuyFund()
{
gupiao1->Buy();
gupiao2->Buy();
gupiao3->Buy();
guozhai->Buy();
fangdichan->Buy();
}
void SellFund()
{
gupiao1->Sell();
gupiao2->Sell();
gupiao3->Sell();
guozhai->Sell();
fangdichan->Sell();
}
};
int main()
{
Fund *jijin = new Fund();
jijin->BuyFund();
cout << endl << "Two years later......
" << endl;
jijin->SellFund();
return 0;
}
C
#include
#include
typedef struct
{
void (*Sell)();
void (*Buy)();
} Invest;
typedef struct
{
Invest base;
} Stock;
void Stock1_Sell()
{
printf("股票1卖出
");
}
void Stock1_Buy()
{
printf("股票1买入
");
}
Stock *createStock1()
{
Stock *s = (Stock *)malloc(sizeof(Stock));
s->base.Sell = Stock1_Sell;
s->base.Buy = Stock1_Buy;
return s;
}
typedef struct
{
Invest base;
} Stock2;
void Stock2_Sell()
{
printf("股票2卖出
");
}
void Stock2_Buy()
{
printf("股票2买入
");
}
Stock2 *createStock2()
{
Stock2 *s = (Stock2 *)malloc(sizeof(Stock2));
s->base.Sell = Stock2_Sell;
s->base.Buy = Stock2_Buy;
return s;
}
typedef struct
{
Invest base;
} Stock3;
void Stock3_Sell()
{
printf("股票3卖出
");
}
void Stock3_Buy()
{
printf("股票3买入
");
}
Stock3 *createStock3()
{
Stock3 *s = (Stock3 *)malloc(sizeof(Stock3));
s->base.Sell = Stock3_Sell;
s->base.Buy = Stock3_Buy;
return s;
}
typedef struct
{
Invest base;
} NationalDebt1;
void NationalDebt1_Sell()
{
printf("国债1卖出
");
}
void NationalDebt1_Buy()
{
printf("国债买入
");
}
NationalDebt1 *createNationalDebt1()
{
NationalDebt1 *s = (NationalDebt1 *)malloc(sizeof(NationalDebt1));
s->base.Sell = NationalDebt1_Sell;
s->base.Buy = NationalDebt1_Buy;
return s;
}
typedef struct
{
Invest base;
} Realty1;
void Realty1_Sell()
{
printf("房地产卖出
");
}
void Realty1_Buy()
{
printf("房地产3买入
");
}
Realty1 *createRealty1()
{
Realty1 *s = (Realty1 *)malloc(sizeof(Realty1));
s->base.Sell = Realty1_Sell;
s->base.Buy = Realty1_Buy;
return s;
}
typedef struct
{
Stock *gupiao1;
Stock2 *gupiao2;
Stock3 *gupiao3;
NationalDebt1 *guozhai;
Realty1 *fangdichan;
} Fund;
Fund *createFund()
{
Fund *fund = (Fund *)malloc(sizeof(Fund));
fund->gupiao1 = createStock1();
fund->gupiao2 = createStock2();
fund->gupiao3 = createStock3();
fund->guozhai = createNationalDebt1();
fund->fangdichan = createRealty1();
return fund;
}
void BuyFund(Fund *fund)
{
fund->gupiao1->base.Buy();
fund->gupiao2->base.Buy();
fund->gupiao3->base.Buy();
fund->guozhai->base.Buy();
fund->fangdichan->base.Buy();
}
void SellFund(Fund *fund)
{
fund->gupiao1->base.Sell();
fund->gupiao2->base.Sell();
fund->gupiao3->base.Sell();
fund->guozhai->base.Sell();
fund->fangdichan->base.Sell();
}
int main()
{
Fund *jijin = createFund();
BuyFund(jijin);
printf("
Two years later...
");
SellFund(jijin);
free(jijin->gupiao1);
free(jijin->gupiao2);
free(jijin->gupiao3);
free(jijin->guozhai);
free(jijin->fangdichan);
free(jijin);
return 0;
}
总结
