二分法求方程的根

#include
#include
int main()
{
    double x0,x1,x2,y0,y1,y2;
    do{
        scanf("%lf%lf",&x1,&x2);
        y1=2*x1*x1*x1-4*x1*x1+3*x1-6;
        y2=2*x2*x2*x2-4*x2*x2+3*x2-6;
    }
    while(y1*y2>=0);
    do{
        x0=(x1+x2)/2;
        y0=2*x0*x0*x0-4*x0*x0+3*x0-6;
        if(y0*y1<0){
            y2=y0;
            x2=x0;
        }
        else{
            y1=y0;
            x1=x0;
        }
    }
    while(fabs(y0)>=1e-5);
        printf("%.6lf",x0);
    return 0;
}