point(float a,float b):x(a,b){};

答案:2 悬赏:20 手机版

解决时间 2021-04-04 04:43

提问者网友：未信
2021-04-03 19:11

最佳答案

五星知识达人网友：人類模型
2021-04-03 20:29

#include
#include

class Point
{
private:
float x,y;
public:
Point(float a = 0.0f,float b = 0.0f):x(a),y(b){};
friend float dis(Point &left,Point& right);
};

float dis(Point &left,Point& right)
{
float a = pow(left.x-right.x,2);
float b = pow(left.y - right.y,2);

return sqrt(a + b);

//return sqrt(pow((left.x-right.x),2) + pow(left.y - right.y,2));
}

int main()
{
Point pox(2.0,3.0);
Point poy(3.0,3.0);

float result = dis(pox,poy);

cout<
return 0;
}

全部回答

1楼网友：罪歌
2021-04-03 21:07

我觉得这答案就是在扯，那是一个构造函数初始化列表
给你贴上运行正确的程序
#include
#include

class Point
{
private:
float x,y;
public:
Point(float a = 0.0f,float b = 0.0f):x(a),y(b){};
friend float dis(Point &left,Point& right);
};
float dis(Point &left,Point& right)
{
float a = pow(left.x-right.x,2);
float b = pow(left.y - right.y,2);
return sqrt(a + b);

//return sqrt(pow((left.x-right.x),2) + pow(left.y - right.y,2));
}
int main()
{
Point pox(2.0,3.0);
Point poy(3.0,3.0);

float result = dis(pox,poy);
cout< return 0;
}

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