求大神指点！——为啥运行时说void类型指代不明啊？

#include <iostream.h>
class Tpoint
{
    int x , y;
pubic:
  void     setpiont( int x1, int y1)//为什么说void类型在这里指代不明确？
    {
        x=x1;y=y1;
    }
    void dispoint()
    {
        cout <<"("<< x << "," << y << ")" << endl;
    }
};
void main()
{
    Tpoint a;
    TPoint *p=new Tpoint;
    a.setpoint(12,6);
    cout <<"First point=>";
    a.dispoint();
    p->setpoint(5,12);
    cout <<"Second point=>";
    p->dispoint();
}