C++类模板再学习

之前已经学习了C++类模板；类模板的写法和一般类的写法有很大的差别；不容易熟悉；下面再做一遍；

做一个椭圆类，成员有长轴长度和短轴长度；

// ellipse.h: interface for the ellipse class.
//
//
 
#if !defined(AFX_ELLIPSE_H__51CD537E_D0B0_40F9_AD63_92F0502C0430__INCLUDED_)
#define AFX_ELLIPSE_H__51CD537E_D0B0_40F9_AD63_92F0502C0430__INCLUDED_
 
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
 
template<class T1, class T2>
 
class ellipse  
{
public:
	ellipse(T1 a, T2 b) : older(a), lack(b){ }
 
public:
	T1 getolder() const;
	void setolder(T1 a);
	T2 getlack() const;
	void setlack(T2 b);
 
private:
    T1 older;  //长轴长度
    T2 lack;  //短轴长度
};
 
template<class T1, class T2>
T1 ellipse::getolder() const {
	return older;
}
 
template<class T1, class T2>
void ellipse::setolder(T1 a){
	older = a;
}
 
template<class T1, class T2>
T2 ellipse::getlack() const{
	return lack;
}
 
template