#include<iostream.h>
#include<math.h>
#define PI 3.14159265358

double disp360(  double j)
	{  //用度制表示弧度
		  double d;
		d=j*180.0/PI;
		return d;
	
	}
double fm_d(  double x)
{
	int t(0);
	  double x4;
	  double x3,x5;
	  if(x<0)
	  {t=2;
	  x=-x;
	  }
	  double x1=floor(x*100.0);
      double x2=x*100.0-x1;
	 x3=x2/36.0;
	 x4=floor((x*100.0-x2)/100.0);
    x5=(x*100-x2)/100.0-x4;
    x5=x5*10.0/6.0;
	//
	if(t==0) return(floor(x)+x3+x5);
	else return-(floor(x)+x3+x5);
}
double d_fm(  double x)
{ //用度分秒表示dou
	  double x4;
	  double x3,x5;
	  int b(0);
	  if(x<0.0){x=-x;b=2;}
	  double x1=floor(x);
      double x2=x-x1;
	 x3=floor(60.0*x2);//this is the fen value
	 x4=(x2*60.0-x3)*60.0;//this is the miao value
    x5=x4-60.0;if(x5<0.0) x5=-x5;
	 if(x5<0.0000000001){
	x4-=60.0;

	x3+=1;
	}
    x5=x3-60.0;if(x5<0) x5=-x5;
   
	 if(x5<0.0000000001){
	x3-=60.0;
	x1+=1.0;
	}
     if(b==0) return x1+x3/100.0+x4/10000.0; 
	else return -(x1+x3/100.0+x4/10000.0);
  } 

double h_d(  double x)
{
     double y=disp360(x);
   
ss:   if(y>=360.0) {
	   y-=360.0;
       goto ss;
   }
  return d_fm(y);

}
double d_h(  double x)
{
	  double y=fm_d(x);
    return y*PI/180.0;
}
void main()
{
	int n;//define the number of angle;
	cout<<"        Please input the number of angle......"<<endl;
	cin>>n;
	double a[50][50],fx0(0),fy0(0),fx(0),fy(0),fs(0),s0(0);

	double ang[80],s[80],ang0(0),x[80],y[80],dx[80],dy[80];
	cout<<"please input the start coordernates:"<<endl;
	cout<<"x=";
	cin>>x[1];
	cout<<endl<<"y=";
	cin>>y[1];
	
	cout<<"please input the start direction:";
	cin>>a[0][1];a[0][1]=d_h(a[0][1]);


	cout<<endl<<"        Please input the s and angle of angles......"<<endl;
	for(int i=1;i<=n;i++)
	{ 
        cout<<endl<<"s("<<i<<")=";
		cin>>s[i];s0+=s[i];
		cout<<endl<<"ang("<<i<<")=";
		cin>>ang[i];ang[i]=d_h(ang[i]);ang0+=ang[i];
        cout<<endl;
	}
	cout<<"導線角度閉合差為:"<<h_d((n-2)*PI-ang0)<<endl;
    ang0=((n-2)*PI-ang0)/n;
		
	for(i=1;i<=n;i++)//ok direction calculation;
	{
		a[i][i+1]=a[i-1][i]+PI+ang[i]+ang0;
		if(i==1) a[i][i+1]=a[i-1][i]+ang[i]+ang0;
ee:     if(a[i][i+1]-2*PI>0) {a[i][i+1]-=2*PI;goto ee;}
		cout<<"direction of "<<i<<"to"<<i+1<<"="<<h_d(a[i][i+1])<<endl;
		if(i!=n)
		{
		dx[i]=s[i]*cos(a[i][i+1]);fx+=dx[i];x[i+1]=x[i]+dx[i];cout<<"x("<<i+1<<")'="<<x[i+1]<<endl;   
		dy[i]=s[i]*sin(a[i][i+1]);fy+=dy[i];y[i+1]=y[i]+dy[i];cout<<"y("<<i+1<<")'="<<y[i+1]<<endl;    
		}
		else
		{
			dx[i]=s[i]*cos(a[i][i+1]);fx+=dx[i];x[0]=x[i+1]=x[i]+dx[i];cout<<"x("<<1<<")'="<<x[i+1]<<endl;       
		    dy[i]=s[i]*sin(a[i][i+1]);fy+=dy[i];y[0]=y[i+1]=y[i]+dy[i];cout<<"y("<<1<<")'="<<y[i+1]<<endl;    
		}
	} 
cout<<"           fx="<<fx<<endl;cout<<"           fy="<<fy<<endl;
fs=sqrt(fx*fx+fy*fy);cout<<"           fs="<<fs<<endl;
cout<<"s0="<<s0<<endl;
cout<<"     1/K="<<1<<"/"<<s0/fs<<endl;
	for(i=1;i<=n;i++)
	{
	 		if(i!=n)
		{
		dx[i]=s[i]*cos(a[i][i+1])-fx*s[i]/s0;x[i+1]=x[i]+dx[i];cout<<"x("<<i+1<<")="<<x[i+1]<<endl;   
		dy[i]=s[i]*sin(a[i][i+1])-fy*s[i]/s0;y[i+1]=y[i]+dy[i];cout<<"y("<<i+1<<")="<<y[i+1]<<endl;    
		}
		else
		{
			dx[i]=s[i]*cos(a[i][i+1]);x[i+1]=x[i]+dx[i]-fx*s[i]/s0;cout<<"x("<<1<<")="<<x[i+1]<<endl;       
		    dy[i]=s[i]*sin(a[i][i+1]);y[i+1]=y[i]+dy[i]-fy*s[i]/s0;cout<<"y("<<1<<")="<<y[i+1]<<endl;    
		}
 
	}

}