Moving Torus in opengl

#include<GL/glut.h>

int x=0,y=0,z=0;
float radius=7.0;
float u=0.0;
float p=2.0;
void display()
{   p=p+0.03;

glClear(GL_COLOR_BUFFER_BIT);
// glColor3f(1.0,0.0,1.0);
    glPushMatrix();
     
      glRotatef(p,1.0,0.0,0.0);
      glutWireTorus(3,5,30,40);
     
      glPopMatrix();
glBegin(GL_LINES);
glColor3f(1.0,0.0,0.0);glVertex3f(0,0,0);glVertex3f(20,0,0);
glColor3f(1.0,1.0,0.0);glVertex3f(0,0,0);glVertex3f(0,20,0);
glColor3f(1.0,0.0,1.0);glVertex3f(0,0,0);glVertex3f(0,0,20);

glEnd();

   glFlush();
   glutPostRedisplay();
   //glutSwapBuffers();
}
/*

void display() {
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  GLfloat direction[] = {-1.0, -1.0, -1.0, 0.0};
  glLightfv(GL_LIGHT0, GL_POSITION, direction);
  glutSolidSphere(1.0, 25, 25);
  glMatrixMode(GL_MODELVIEW);
//  glPushMatrix();
  glLoadIdentity();

   x = radius * cos(u);
    y = 0;
    z = radius * sin(u);
  gluLookAt(x, y, z, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);

  //glPopMatrix();
  glFlush();
  glutSwapBuffers();
}

*/
void init(void)
{

 glClearColor(0.0,0.0,0.0,1.0);
 glMatrixMode(GL_PROJECTION);
 glLoadIdentity();
 gluPerspective(60.0,4/3,1,40);
 glMatrixMode(GL_MODELVIEW);
 glLoadIdentity();
 gluLookAt(7,7,20,0,0,0,0,1,0);



 /*glLightfv(GL_LIGHT0,GL_DIFFUSE,yellow);
 glEnable(GL_LIGHT0);
 glEnable(GL_LIGHTING);
 glEnable(GL_DEPTH_TEST);*/

}



/*
void timer(int v)
{
 u=u+0.1;
 glutPostRedisplay();
 glutTimerFunc(1000/60,timer,v);

}



void reshape(GLint w,GLint h)
{
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(40,((GLfloat)w/(GLfloat)(h)),1,10.0);
   
}


*/

int main(int argc,char **argv)
{
    glutInit(&argc,argv);
    glutInitWindowSize(640,480);
    glutInitWindowPosition(100,150);
    glutInitDisplayMode(GLUT_RGB|GLUT_SINGLE);
    glutCreateWindow("Going for a SMILEY :-)");
 
   glutDisplayFunc(display);
  // glutReshapeFunc(reshape);
  // glutTimerFunc(100,timer,0);
    init();
    glutMainLoop();
}