c++(编写一个程序,设计一个点point,求两个点之间的距离。)

时间:2025-01-17 18:04:59

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;
}

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