一个c++模板示例

1、给出一个模板基类 michaelObj，它包含一个纯虚函数和一个成员函数。

#include <iostream>

template<typename T1,typename T2>

class michaelObj

{

public:
michaelObj(T1,T2);
~michaelObj(void);

public:
void showContent();

virtual void showVir() = 0;

public:
T1 m_ele1;
T2 m_ele2;

};

template<typename T1,typename T2>

michaelObj<T1,T2>::michaelObj(T1 p1,T2 p2)

{
m_ele1=p1;
m_ele2=p2;

}

template<typename T1,typename T2>

michaelObj<T1,T2>::~michaelObj(void)

{

}

template<typename T1,typename T2>

void michaelObj<T1, T2>::showContent()

{
std::cout<<"hello"<<std::endl;

}

2、继承类newObj，使用继承类型 int 实例化模板类michaelObj

.h文件定义：

#include "michaelobj.h"

class newObj :public michaelObj<int,int>

{

public:
newObj(int ,int );
~newObj(void);

public:
void showC2();
void showVir();

};

.cpp文件定义

newObj::newObj(int a,int b):michaelObj<int,int>(a,b)

{

}

newObj::~newObj(void)

{

}

void newObj::showC2()

{
std::cout<<__FUNCDNAME__<<std::endl;

}

void newObj::showVir()

{
std::cout<<m_ele1<<" and "<<m_ele2<<std::endl;

}

3、测试代码

int main()

{

newObj newone(13,14);
newone.showVir();
newone.showC2();

}