Расстояние от точки

#include  <bits/stdc++.h>
using namespace std;
int main()
{
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    double x1,y1,x2,y2,x0,y0,A,B,C,H,h1,h2;
 
 
 cin>>x0;
cin>>y0;
cin>>x1;
cin>>y1;
 cin>>x2;
cin>>y2;
 
A=y2-y1;
B=x1-x2;
C=(y1*x2)-(y2*x1);
    if ((y1==y2)&&(x1==x2))
    {
H =abs((A*x0+B*y0+C))/sqrt(A*A+B*B);
cout.precision(9);
 cout<<fixed<<abs(H)<<endl;
 if ((x0>=x1||x0<=x2)&&(y0>=y1&&y0<=y2))
{
 
h1 =(A*x0+B*y0+C)/sqrt(A*A+B*B);
cout.precision(9);
 cout<<fixed<<abs(h1)<<endl;
}
else
{
    h1=sqrt(((x0-x1)*(x0-x1))+((y0-y1)*(y0-y1)));
    cout.precision(9);
 cout<<fixed<<abs(h1)<<endl;
}
 
 
if (((y0>=y1&&y0<=y2)||(y0>=y2&&y0<=y1))&&((x0>=x1&&x0<=x2)||(x0>=x2&&x0<=x1)))
{
 
  h2 =abs((A*x0+B*y0+C))/sqrt(A*A+B*B);
 
cout.precision(9);
 cout<<fixed<<abs(h2)<<endl;
}
else
{
    if ((y1-y2>=0)&&(x1-x2>=0))
    {
 
        h2=sqrt(((x0-x1)*(x0-x1))+((y0-y1)*(y0-y1)));
    cout.precision(9);
 cout<<fixed<<abs(h2)<<endl;
}
else
{
    h2=sqrt(((x0-x2)*(x0-x2))+((y0-y2)*(y0-y2)));
    cout.precision(9);
 cout<<fixed<<abs(h2)<<endl;
}
}  
}
/*else
  {
        
  }
*/
        return 0;
}