?? zp1821.cpp
字號(hào):
//---------------------------------------------------------------------------
#pragma hdrstop
//---------------------------------------------------------------------------
#pragma argsused
#include <iostream.h>
#include <iomanip.h>
#include <math.h>
double db(double n)
{
if (fabs(n)< 1e-5)
return 0;
return n;
}
int main(int argc, char* argv[])
{
int N,I;
double x1,y1,x2,y2,x3,y3,x,y,k1,k2;
cin>>N;
for (I=0;I<N;I++)
{
cin>>x1>>y1>>x2>>y2>>x3>>y3;
if (db(y1-y3)==0)
{ k1=y3;y3=y2;y2=k1;
k1=x3;x3=x2;x2=k1; }
if (db(y2==y3))
{ k1=y3;y3=y1;y1=k1;
k1=x3;x3=x1;x1=k1; }
k1=db(-(x3-x2)/(y3-y2));
k2=db(-(x3-x1)/(y3-y1));
x=db((-y1+y2+k1*x1-k2*x2)/(k1-k2));
y=db(k1*(x-x1)+y1);
cout<<setiosflags(ios::fixed)<<setprecision(4)
<<x<<' '<<y<<endl;
}
return 0;
}
//---------------------------------------------------------------------------
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