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



void display()
{
  glClear(GL_COLOR_BUFFER_BIT); 

  glColor3f(0.8,0.7,0.9);
  glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);

  glRectf(0.2,0.5,0.4,0.7);   
  glBegin(GL_TRIANGLES);
    glVertex2f(0.0,0.5);
    glVertex2f(-0.5,0.0);
    glVertex2f(0.5,0.0);
  glEnd();

  glFlush();

}

void reshape(int width, int height)
{
  glViewport(0, 0, (GLint) width, (GLint) height);
}

void init()
{
  glClearColor(0, 0, 0, 0); 
}

void hit(unsigned char i, int a, int b)
{

  switch(i){
  case 'q':
    exit(1);
    break;
  }
  glutPostRedisplay();
}

int main(int argc, char **argv)
{
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGB);
  glutInitWindowSize(500,500);
  glutInitWindowPosition(0,0);
  glutCreateWindow("First Program");
  init();
  glutDisplayFunc(display);
  glutReshapeFunc(reshape);
  glutKeyboardFunc(hit);
  glutMainLoop();
}