未知c++链接错误

[wuyanchao]

#include<iostream>
#include<math.h>
using namespace std;
template <class t>
class Distance{
public:

Distance (){cout<<"hi";}
t distance(t a1,t b1,t c1,t d1)
{
t x1,y1,L1;
x1=c1-a1;y1=d1-b1;
L1=sqrt(x1*x1+y1*y1);
cout<<"The distance is :"<<L1<<endl;
return 0;
}

};
template <class t>
int main()
{
Distance D;
D.distance(6,8,3,4);
D.distance(7.9,4.9,8.7,4.7);
cin.get();
return 0;
}
编译器 vc6.0

[飞哥]

template <class t>
int main()
{
Distance D;
D.distance(6,8,3,4);
D.distance(7.9,4.9,8.7,4.7);

//=============
这样使用是不对的，

定义模板该这样
Distance<int> D;
Distance<double> D1;

[mymtom]

#include<iostream>
#include<math.h>
using namespace std;

template <class t>
class Distance{
public:
Distance (){cout<<"hi";}
t distance(t a1,t b1,t c1,t d1)
{
t x1,y1,L1;
x1=c1-a1;y1=d1-b1;
L1=sqrt(x1*x1+y1*y1);
cout<<"The distance is :"<<L1<<endl;
return 0;
}

};

int main()
{
Distance<int> id; // 忘记模板怎么用了吗？
Distance<double> dd;
id.distance(6, 8, 3, 4);
dd.distance(7.9, 4.9, 8.7, 4.7);
cin.get();

return 0;
}

[wuyanchao]

谢谢 一人10

[wuyanchao]

怎么给分?- -o

[wuyanchao]

呵呵 ok