Interface 

#include <stdio.h> 
#include <GL/glut.h> 
 
void main () 
{ 
 

 
glutInit (&argc, argv);                         
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB); 
glutInitWindowSize (640, 480);                
glutInitPosition (100, 150);                  
glutCreateWindow (“nome da janela”);