> #include <iostream>
> using namespace std;
> int main ()
> {
> 	int n;
> 	cin >>n;
> 	double x1,x2,x3,x4,y1,y2,y3,y4;
> 	double a[10][8];
> 	for (int i=0;i<n;i++)
> 		for (int k=0;k<8;k++)
> 	{
> 			cin>>a[i][k];
> 
> 	}
> 	cout<<"INTERSECTING LINES OUTPUT"<<endl;
> 	for (int m=0;m<n;m++)
> 	{
> 		x1=a[m][0];y1=a[m][1];
> 		x2=a[m][2];y2=a[m][3];
> 		x3=a[m][4];y3=a[m][5];
> 		x4=a[m][6];y4=a[m][7];
> 		double X,Y;
> 		if (x1==x2&&x3!=x4)
> 		{
> 			X=x1;
> 			Y=((y4-y3)/(x4-x3))*(X-x3)+y3;
> 		}
> 		else if (x3==x4&&x1!=x2)
> 		{
> 			X=x3;
> 			Y=((y2-y1)/(x2-x1))*(X-x1)+y1;
> 		}
> 		else if (((y1==y2)&&(y3==y4))||((x1==x2)&&(x3==x4))||((y4-y3)/(x4-x3)==(y4-y1)/(x4-x1))&&((y4-y3)/(x4-x3)==(y2-y1)/(x2-x1)))
> 		{
> 			cout<<"LINE"<<endl;
> 		     continue;
> 		}
> 		else if (((y1==y2)&&(y2==y3)&&(y3==y4))||((x1==x2)&&(x2==x3)&&(x3==x4))||((y4-y3)/(x4-x3)==(y2-y1)/(x2-x1))&&((y4-y3)/(x4-x3)!=(y4-y3)/(x2-x1)))
> 		{
> 			cout<<"NONE"<<endl;
> 			continue;
> 		}
> 		else if (((y4-y3)/(x4-x3)!=(y2-y1)/(x2-x1)))		
> 		{
> 			 X=(y3-y1-((y4-y3)/(x4-x3))*x3+((y2-y1)/(x2-x1))*x1)/(((y2-y1)/(x2-x1))-((y4-y3)/(x4-x3)));
> 		     Y=(((y4-y3)/(x4-x3))*y1-((y2-y1)/(x2-x1))*y3+((y2-y1)/(x2-x1))*((y4-y3)/(x4-x3))*x3-((y4-y3)/(x4-x3))*((y2-y1)/(x2-x1))*x1)/(((y4-y3)/(x4-x3))-((y2-y1)/(x2-x1)));
> 		}
> 			 cout<<"POINT ";
> 			 printf("%.2lf",X);
> 			 cout<<" ";
> 		     printf("%.2lf\n",Y);
> 	}		
> 	cout<<"END OF OUTPUT"<<endl;
> 	return 0;
> }

• Re:实在没有办法检查了！到底哪儿错了？？？ (1530) 120073502071 2008-10-09 19:00:41