Create a Cylinder

gluCylinder (and the corresponding GLUT function) do not draw the caps on the cylinder. However, you can simply draw them yourself with gluDisk.

GLUDisk?? What is that??? Maybe you can give a sample code from website or ebook that i can learn..

And maybe another way to create a cylinder

for example

{
//you have this
gluCylinder(quadric ,radius, radius, height, 10, 1);
// one circle
gluDisk(quadric, 0., radius, 10, 1);
// shift to another side of cylinder
glTranslate(0.,0.,height);
// another circle
gluDisk(quadric, 0., radius, 10, 1);
}

if you use ligh, you must render one of this disc's, that normals are in correct way (outside from object)
glPushMatrix()
glRotate(180,0.,1.,0.);
gluDisk(quadric, 0., radius, 10, 1);
glPopMatrix();