标签:distance 基本 protected using image rom mat 直接 坐标
给出下面的一个基类框架:
class Point_1D
{ protected:
float x;//1D 点的x坐标
public:
Point_1D(float p = 0.0);
float distance(const Point_1D & p2);
}
以Point_1D为基类建立一个派生类Point_2D,增加一个保护数据成员:
float y;//2D平面上点的y坐标
以Point_2D为直接基类再建立一个派生类Point_3D,增加一个保护数据成员:
float z;//3D立体空间中点的z坐标
生成上述类并编写主函数,根据输入的点的基本信息,建立点对象,并能计算该点到原点的距离。
输入格式: 测试输入包含若干测试用例,每个测试用例占一行(点的类型(1表示1D点,2表示2D点,3表示3D点) 第一个点坐标信息(与点的类型相关) 第二个点坐标信息(与点的类型相关))。当读入0时输入结束,相应的结果不要输出。
输入样例:
1 -1 0
2 3 4 0 0
3 1 2 2 0 0 0
0
输出样例:
Distance from Point -1 to Point 0 is 1
Distance from Point(3,4) to Point(0,0) is 5
Distance from Point(3,3,3) to Point(0,0,0) is 3
#include
#includeusing namespace std;
class Point_1D
{
protected:
float x;//1D 点的x坐标
public:
Point_1D(float x):x(x){
}
float distance(Point_1D b){
return fabs(x-b.x);
}
};
/* 请在这里填写答案 */
class Point_2D:public Point_1D{
protected:
float y;
public:
Point_2D(float x,float y):Point_1D(x),y(y){
}
float distance(Point_2D b){
return sqrt(pow(x-b.x,2)+pow(y-b.y,2));
}
};
class Point_3D:public Point_2D{
protected:
float z;
public:
Point_3D(float x,float y,float z):Point_2D(x,y),z(z){
}
float distance(Point_3D b){
return sqrt(pow(x-b.x,2)+pow(y-b.y,2)+pow(z-b.z,2));
}
};
int main( ) {
int d=0;
float x,y,z;
float bx,by,bz;
while(1){
cin>>d;
if(d==0)break;
if(d==1){
cin>>x;
cin>>bx;
Point_1D a(x);
Point_1D b(bx);
cout"Distance from Point "" to Point "" is "endl;
}else if(d==2){
cin>>x>>y;
cin>>bx>>by;
Point_2D a(x,y);
Point_2D b(bx,by);
cout"Distance from Point("","") to Point("","") is "endl;
}else{
cin>>x>>y>>z;
cin>>bx>>by>>bz;
Point_3D a(x,y,z);
Point_3D b(bx,by,bz);
cout"Distance from Point("","","") to Point("","","") is "endl;
}
}
return 0;
}
pta c++ 两点间距离计算 (40分)
标签:distance 基本 protected using image rom mat 直接 坐标
原文地址:https://www.cnblogs.com/xxw1/p/12995016.html