设计模式——简单工厂模式（C++实现）
2024-08-30 14:37:01
#include <iostream>
#include <string> using namespace std; class COperator
{
public:
virtual double GetResult()=; public:
COperator()
{
}
COperator(double number_a, double number_b): m_numberA(number_a), m_numberB(number_b)
{
}
double m_numberA;
double m_numberB;
}; class CSub: public COperator
{
public:
CSub()
{
}
CSub(double number_a, double number_b): COperator(number_a, number_b)
{
}
virtual double GetResult();
}; double CSub::GetResult()
{
return this->m_numberA - this->m_numberB;
} class CAdd: public COperator
{
public:
CAdd()
{
}
CAdd(double number_a, double number_b): COperator(number_a, number_b)
{
}
virtual double GetResult();
}; double CAdd::GetResult()
{
return m_numberA + m_numberB;
} class CFactory
{
public:
static COperator* CreateOperation(char sOpeType);
}; COperator* CFactory::CreateOperation(char sOpeType)
{
switch(sOpeType)
{
case '-':
return new CSub();
break;
case '+':
return new CAdd();
break;
default:
break;
}
} int main(void)
{
COperator* oper = CFactory::CreateOperation('-');
oper->m_numberA = ;
oper->m_numberB = ;
cout<< "oper->m_numberA: "<< oper->m_numberA<< endl;
cout<< "oper->m_numberB: "<< oper->m_numberB<< endl;
cout<< oper->GetResult()<< endl; return ;
}
////////////////////////
[root]$ ./2_simple_factory
oper->m_numberA:
oper->m_numberB:
-
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