#include<iostream> #include<string> using namespace std; 哪里有问题
Point operator + (const Point &c1,const Point &c2)
{
class Point
{
public:
Point(int a=0,int b=0):x(a),y(b){}
friend Point operator + (const Point &c1,const Point &c2);
friend ostream & operator<<(ostream &out,const Point &c);
};
return Point(c1.x+c2.x,c1.y+c2.y);
}
ostream & operator<<(ostream &out,Point const &c){
out<<"("<<c.x<<","<<c.y<<")";
return out;
}哪错了
int main()
{
Point c1(5,4f),c2(4,3f),c3;
cout<<"c1"<<c1<<endl;
cout<<"c2"<<c2<<endl;
c3=c1-c2;
cout<<"c3=c1-c2"<<c3<<endl;
return 0;
}
哪错了？求解答。
{
public:
Point(int a=0,int b=0):x(a),y(b){}
friend Point operator + (const Point &c1,const Point &c2);
friend ostream & operator<<(ostream &out,const Point &c);
private:
int x;
int y;
};
Point operator + (const Point &c1,const Point &c2)
{
return Point(c1.x+c2.x,c1.y+c2.y);
}
ostream & operator<<(ostream &out,Point const &c)
{
out<<"("<<c.x<<","<<c.y<<")";
return out;
}//哪错了
int main()
{
Point c1(5,4),c2(4,3),c3;
cout<<"c1"<<c1<<endl;
cout<<"c2"<<c2<<endl;
c3=c1+c2;
cout<<"c3=c1-c2"<<c3<<endl;
return 0;
}
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