#include <windows.h>

#include <gl\gl.h>

#include <gl\glut.h>

void init(void);

void display(void);

void keyboard(unsigned char, int, int);

int main (int argc, char **argv) {

 glutInit(&argc, argv);

 glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);

 glutInitWindowSize(600, 600);

 glutInitWindowPosition(50, 50);

 glutCreateWindow("A 3D Object");

 init();

 glutDisplayFunc(display);

 glutKeyboardFunc(keyboard); /* set keyboard handler */

 glutMainLoop();

 return 0;

}

void init(void) {

 glClearColor(0.0, 0.0, 0.0, 0.0);

 glMatrixMode(GL_PROJECTION);

 glLoadIdentity();

 glOrtho(-15.0, 15.0, –15.0, 15.0, –15.0, 15.0);

}

void display(void) {

 glClear(GL_COLOR_BUFFER_BIT);

 glBegin(GL_QUADS);

 glColor3f(0.0, 0.0, 1.0); /* center square */

 glVertex3f(-3.0, –3.0, 0.0);

 glVertex3f(3.0, –3.0, 0.0);

 glVertex3f(3.0, 3.0, 0.0);

 glVertex3f(-3.0, 3.0, 0.0);

 glEnd();

 glBegin(GL_TRIANGLES);

 glColor3f(1.0, 0.0, 0.0); /* now draw the four triangles */

 glVertex3f(0.0, 6.5, 0.0);

 glColor3f(0.0, 0.0, 0.9f);

 glVertex3f(-3.0, 3.0, 0.0);