Thread: Need some help drawing a cylinder in openGL

Been a long time since i last posted here. How is everyone hehe.

Lately ive been reading on some openGL stuff and need some help with a simple program. My problem is that i cant get the cylinder to be displayed, i only get 3 warnings but then there is nothing on the screen.

Code:

#include <stdio.h>
#include <GL/glut.h>


int wf = 1; /*wireframe*/
void display()
{
	/*clear window*/
	glClear (GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
	glLineWidth(2.0);
	glColor3f(0.5, 1.0, 0.1);

}
				 
void Idelfunc()
{
	glutPostRedisplay();
}

void  init()
{ 
	/*set clear color to black*/
	glClearColor (0.0, 0.0, 0.0, 0.0);
	/*set fill color to yellow*/
	glColor3f(0.0, 0.6, 0.9);
	{
		glEnable (GL_DEPTH_TEST);
		glCullFace(GL_BACK);
		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
	}

	/*Cylinder*/
	{
		void Cylinder (double height, double radius, int slices, int stacks);

			GLUquadricObj* cyl;
			cyl = gluNewQuadric();
			gluQuadricDrawStyle(cyl, GLU_LINE);
			gluCylinder(cyl, 3, 3, 5, 12, 12);
	}	
	
}

void keys (unsigned char key1, int x, int y)
{
	switch (key1)
	{
		//view in wireframe
	case 'v':
		wf = 1-wf;
			if (wf) 
				{
					glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
				}
			else
				{
					glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
				}
				glutPostRedisplay();
	break;
	case 'q':
	if (key1 =='q' || key1 =='Q' ||key1 =='\27') exit(0);

	}
}

int main( int argc, char** argv)
{
	/*initialize mode and open a window in upper-left corner of screen*/
	
	glutInit(&argc,argv);
	glutInitDisplayMode(GLUT_SINGLE |GLUT_RGB);
	glutInitWindowSize(500, 500);
	glutInitWindowPosition(0,0);
	glutCreateWindow("Cylinder"); 
	glutDisplayFunc(display);

	init();
//	glutReshapeFunc(myreshape);
	glutIdleFunc(Idelfunc);
	glutKeyboardFunc(keys);
	glutMainLoop();
}