这个程序到底哪里出错了啊？？？
#include<iostream>#include<math.h>
using namespace std;
class point;
class distance
{
private:
double length;
public:
distance(double h);
void qiuhe(point a,point b);
};
class point
{
private:
double x;
double y;
public:
friend class distance;
point(double a,double b);
};
int main()
{
point x1(0,0),x2(0,0);
distance s(1.0);
s.qiuhe(x1,x2);
return 0;
}
point::point(double a,double b)
{
cin>>a>>b;
x=a;y=b;
}
distance::distance(double h)
{
length=h;
cin>>h;
length=h;
}
void distance::qiuhe(point a,point b)
{
distance temp(0.0);
temp=sqrt((a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y));
cout<<temp.length;
}
感觉好乱，你要习惯类用大写字母开头，同类的函数实现放到一起
还有类方法qiuhe中定义类对象是什么鬼 using namespace std;
偷懒可不是什么好事
碰巧std命名空间也有一个叫distance这玩意的
#include<iostream>
#include<math.h>
//using namespace std;
class point;
class distance
{
private:
double length;
public:
distance(double h);
void qiuhe(point a, point b);
};
class point
{
private:
double x;
double y;
public:
friend class distance;
point(double a, double b);
};
int main()
{
point x1(0, 0), x2(0, 0);
distance s(1.0);
s.qiuhe(x1, x2);
return 0;
}
point::point(double a, double b)
{
std::cin >> a >> b;
x = a; y = b;
}
distance::distance(double h)
{
length = h;
std::cin >> h;
length = h;
}
void distance::qiuhe(point a, point b)
{
distance temp(0.0);
temp = sqrt((a.x - b.x)*(a.x - b.x) + (a.y - b.y)*(a.y - b.y));
std::cout << temp.length;
}
人造人 发表于 2018-1-26 17:55
using namespace std;
偷懒可不是什么好事
谢谢，谢谢！！！
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