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帮我看下到底是什么错误,测试数据都对啊#include <iostream>
#include <stdio.h>
using namespace std;
struct POINT
{
int x;
int y;
};
struct node
{
POINT a;
POINT b;
int n;
};
int max(int x,int y)
{
return x>y?x:y;
}
int min(int x,int y)
{
return x<y?x:y;
}
double solve(POINT sp,POINT ep,POINT op)
{
return((sp.x-op.x)*(ep.y-op.y)-(ep.x-op.x)*(sp.y-op.y));
}
bool ans(node m,node n)
{
return( (max(m.a.x,m.b.x)>=min(n.a.x,n.b.x))&&
(max(n.a.x,n.b.x)>=min(m.a.x,m.b.x))&&
(max(m.a.y,m.b.y)>=min(n.a.y,n.b.y))&&
(max(n.a.y,n.b.y)>=min(m.a.y,m.b.y))&&
(solve(n.a,m.b,m.a)*solve(m.b,n.b,m.a)>=0)&&
(solve(m.a,n.b,n.a)*solve(n.b,m.b,n.a)>=0) );
}
int main()
{
int num,i,j,k;
node temp[20];
bool flag;
while(scanf("%d",&num)&&num)
{
memset(temp,0,sizeof(temp));
for(i=0;i<num;i++)
{
scanf("%d%d%d%d",&temp[i].a.x,&temp[i].a.y,&temp[i].b.x,&temp[i].b.y);
temp[i].n=i;
}
for(i=0;i<num;i++)
{
for(j=0;j<num;j++)
{
flag=ans(temp[i],temp[j]) ;
if(flag)
{
temp[j].n=temp[i].n;
}
}
}
while(scanf("%d%d",&i,&j))
{
if(i==0&&j==0)
{
break;
}
else
{
if(temp[i-1].n==temp[j-1].n)
{
printf("CONNECTED\n");
}
else
{
printf("NOT CONNECTED\n");
}
}
}
}
return 0;
}
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