#include <glut.h>
void display(void)
{
   glClear(GL_COLOR_BUFFER_BIT);
   glColor3f(0.5,0.7,1.0);
   glBegin(GL_POLYGON);
   glVertex3f(0.25,0.25,0.0);
   glColor3f(0.9,1.0,0.4);
   glVertex3f(0.75,0.25,0.0);
   glColor3f(1.0,0.0,0.0);
   glVertex3f(0.25,0.75,1.0);
   glEnd();
   glFlush();
}
void init(void)
{
   glClearColor(1.0,1.0,1.0,0.2);
   glMatrixMode(GL_PROJECTION);

   glOrtho(0.0,1.0,0.0,1.0,1.0,3.0);
}


void main(int argc, char **argv)
{
   glutInit(&argc, argv);
   glutInitDisplayMode(GLUT_DEPTH | GLUT_SINGLE | GLUT_RGB);
   glutInitWindowPosition(100,100);
   glutInitWindowSize(320,320);
   glutCreateWindow("Test!!!!");
   glutDisplayFunc(display);
   glutMainLoop();
}