编写一个程序,设计一个点point,求两个点之间的距离。
#include<iostream>
#include<cmath>
using namespace std;
class point
{
public:
point(int x,int y)
{
this->x=x;
this->y=y;
}
double display(point p)
{
return sqrt((p.x-x)*(p.x-x)+(p.y-y)*(p.y-y));
}
private:
int x;
int y;
};
int main()
{
point p(1,2),p1(2,3);
cout<<p.display(p1)<<endl;
return 0;
}
法二
#include <iostream>
#include <cmath>
using namespace std;
class Point
{
public:
Point(int xx,int yy) { x=xx; y=yy; }
friend double dist(Point p1,Point p2);
private:
int x;
int y;
};
double dist(Point p1,Point p2)//没有类域限定符
{
return sqrt((p1.x-p2.x)*(p1.x-p2.x)+(p1.y-p2.y)*(p1.y-p2.y));
}
int main()
{
Point p1(1,2), p2(2,3);
cout<<"The distance of point p1 and point p2 is ";
cout<<dist(p1,p2)<<endl;
return 0;
}
团子小代码
不务正业的团团分享小语录时刻~~
“人生海海,爱且期待”