Solid object creation

The code is as follows:

#include <windows.h>//#include <GLUT/glut.h>#include <GL/glut.h>#include<math.h>#include<iostream>using namespacestd;#defineGl_pi 3.1415fvoidRenderscene () {glfloat x,y,angle; intIpivot =1; Glclear (Gl_color_buffer_bit|gl_depth_buffer_bit); Glboolean Bcull=true; Glboolean bdepth=true; Glboolean Boutline=true; if(bcull) glenable (gl_cull_face); Elsegldisable (gl_cull_face); if(bdepth) glenable (gl_depth_test); Elsegldisable (gl_depth_test); if(Boutline) Glpolygonmode (gl_back,gl_line); ElseGlpolygonmode (Gl_back,gl_fill);    Glpushmatrix (); Glrotatef (45.0f,1.0f,0.0f,0.0f); Glrotatef (45.0f,0.0f,1.0f,0.0f);        Glbegin (Gl_triangle_fan); glvertex3f (0.0f,0.0f,75.0f);  for(angle =0.0f; Angle < (2.0*GL_PI) Angle + = (GL_PI)/8.0) {x=50.0f*sin (angle); Y=50.0f*cos (angle); if((Ipivot%2)==0) glcolor3f (0.0f,0.0f,1.0f); Elseglcolor3f (1.0f,0.0f,0.0f); Ipivot++;        glvertex2f (x, y);    } glend ();    Glbegin (Gl_triangle_fan); GLVERTEX2F (0.0f,0.0f);  for(angle =0.0f; Angle < (2.0f*GL_PI); angle + = (gl_pi/8.0f) ) {x=50.0f*sin (angle); Y=50.0f*cos (angle); if((Ipivot%2)==0) glcolor3f (0.0f,0.0f,1.0f); Elseglcolor3f (1.0f,0.0f,0.0f); Ipivot++;    glvertex2f (x, y);    } glend ();    Glpopmatrix (); Glutswapbuffers ();}voidchangesize (Glsizei w,glsizei h) {if(h==0) H=1; Glfloat Aspectratio= (glfloat) w/(glfloat) H; Glviewport (0,0, w,h);    Glmatrixmode (gl_projection);    Glloadidentity (); if(w<=h) Glortho (- -, -,- -/aspectratio, -/aspectratio,100.0,-100.0); ElseGlortho (- -*aspectratio, -*aspectratio,- -, -,100.0,-100.0);    Glmatrixmode (Gl_modelview); Glloadidentity ();}voidSETUPRC () {Glclearcolor (0.0f,0.0f,0.0f,1.0f); glcolor3f (1.0f,0.0f,0.0f);    Glshademodel (Gl_flat); Glfrontface (GL_CW);}intMainintargcChar*argv[]) {Glutinit (&argc,argv); Glutinitdisplaymode (glut_double| glut_rgb|glut_depth); Glutinitwindowsize ( -, -); Glutcreatewindow (" Simple");   Glutdisplayfunc (Renderscene);   Glutreshapefunc (changesize);   SETUPRC ();   Glutmainloop (); return 0;}

Solid object creation