Visitor模式的C++实现

Visitor模式#include<iostream>

#include<string>



classemp;

classboss;

classvisitor

{

public:

visitor(){};

~visitor(){};

virtualvoidvisit( empemp ) {};

virtualvoidvisit( bossss ) {};

};





classemp

{

intm_sdays, m_vdays;

floatm_salarys;

std::stringm_name;

public:

emp(std::stringname,floatsalary,intsdays,intvdays):m_name(name),m_salarys(salary),m_sdays(sdays),m_vdays(vdays) { };

~emp(){};



std::stringgetname() {returnm_name; };

floatgetsalary() {returnm_salarys ; };

intgetsdays() {returnm_sdays; } ;

intgetvdays() {returnm_vdays; } ;



virtualvoidaccept(visitorv) { v->visit(this);};



};





classboss:publicemp

{

public:

virtualvoidaccept(visitorv) { v->visit(this);};

};





classvacvisitor:publicvisitor

{

intm_totalvdays;

public:

vacvisitor():m_totalvdays(0){};

~vacvisitor(){};

intgettotalvdays(){returnm_totalvdays; } ;

virtualvoidvisit( empemp ) { m_totalvdays+=emp->getvdays(); };

virtualvoidvisit( bossboss ) { m_totalvdays+=boss->getvdays(); };



};



intmain()

{

emp array[2]={emp("a",100,1,2),emp("b",100,1,2)};



vacvisitor*vc=newvacvisitor();



for(inti=0; i<sizeof(array)/sizeof(emp) ; i++)

{

array[0].accept(vc);

}



std::cout<<vc->gettotalvdays()<<std::endl;



getchar();



return0;

}

原文链接: https://www.cnblogs.com/mumuliang/archive/2010/11/23/1885655.html

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