2556.txt

北大ACM题目例程 详细的解答过程 程序实现 算法分析

#include"iostream.h"

int main()
{char w[1000];
int x,y,dx,dy,i,t;

while(1)
{cin>>w;
if(cin.fail())break;

x=300;y=420;
cout<<"300 420 moveto"<<endl;
dx=10;dy=0;

for(i=0;w[i];i++)
{x+=dx;y+=dy;
cout<<x<<" "<<y<<" lineto"<<endl;
	
if(w[i]=='A'){t=dy;dy=-dx;dx=t;}
else {t=dy;dy=dx;dx=-t;}

}

x+=dx;y+=dy;
cout<<x<<" "<<y<<" lineto"<<endl;
cout<<"stroke"<<endl<<"showpage"<<endl;
}
return 0;
}