turboc错误forstatementmissing

我用tc编程序，不过出现for statement missing，那里错了啊，请帮我解答一下，谢了。

#include<graphics.h>

main(){

        float x[10]={50,90,120,150,220,300,320,380,450,500};

        float y[10]={100,60,50,120,140,60,70,160,150,100};

        int i,k,xx,yy,n=10;

        int drive=DETECT,mode=0;

        float dt,t;

        initgraph(&drive,&mode,”");

        setbkcolor(BLUE);

        setcolor(YELLOW);

        dt=1.0/n;

        for(k=0;k<n;k++){

                       if(k==0)

                                        moveto(x[k],y[k]);

                       lineto(x[k],y[k]);

        }

        for{k=0;k<n-3;k++){

                       x0=x[k];y0[k];                  x1=x[k+1];y1=y[k+1];

                       x2=x[k+2];y2=y[k+2];            x3=x[k+3];y3=y[k+3];

                       for(i=0;i<n;i++){

                             t=i*dt;

                             xx=1.0/6*(-t*t*t+3*t*t*t-3*t+1)*x0+1.0/6*(3*t*t*t-6*t*t+4)*x1+1.0/6*(-3*t*t*t+3*t*t+3*t+1)*x2+1.0/6*t*t*t*x3;

                             yy=1.0/6*(-t*t*t+3*t*t*t-3*t+1)*y0+1.0/6*(3*t*t*t-6*t*t+4)*y1+1.0/6*(-3*t*t*t+3*t*t+3*t+1)*y2+1.0/6*t*t*t*y3;

                             if(i==0)

                                        moveto(xx,yy);

                                        ;ineto(xx,yy);

                        }

         }

         getch();

         closegraph();

}