#include <stdio.h>
int i,j;
int x1[2],y1[2],x2[2],y2[2],A[2],B[2],C[2];

int main()
{
	int n;
	scanf("%d",&n);
	puts("INTERSECTING LINES OUTPUT");
	while(n--)
	{
    	for(i=0;i<2;i++)
    	{
    		scanf("%d%d%d%d",(x1+i),(y1+i),(x2+i),(y2+i));
    		A[i]=y2[i]-y1[i];
    		B[i]=x1[i]-x2[i];
    		C[i]=y1[i]*(x2[i]-x1[i])-x1[i]*(y2[i]-y1[i]);
    	}
    	
    	if(A[1]*B[0]==A[0]*B[1])
    	{
    		if(A[1]*C[0]==A[0]*C[1])
    			puts("LINE");
    		else
    			puts("NONE");
    	}
    	else
    	{
    		double a,b;
    		a=(double)( B[1]*C[0]-B[0]*C[1] )/( A[1]*B[0]-A[0]*B[1] );
    		b=(double)( A[1]*C[0]-A[0]*C[1] )/( B[1]*A[0]-B[0]*A[1] );
    		
    		printf("POINT %.2f %.2f\n",a,b);
    	}
	}
	puts("END OF OUTPUT");
//	while(getchar()!=EOF);
	return 0;
}

• Re:错哪里了？不明白。。。 (886) yan3276 2007-10-09 21:21:45
  • Re:0 0 2 0 0 1 2 1 (20) yan3276 2007-10-09 21:22:57
    • Re:0 0 2 0 0 1 2 1 (35) doris_wei 2009-01-15 16:31:09