Solar System Using OpenGl

#include<GL/glu.h>
#include<GL/glut.h>
#include<GL/gl.h>
#include<math.h>
#include<cstdlib>
#include<iostream>
using namespace std;
float rotAngle=0;
float rotAngle1=10;
float theta=0;


GLfloat randomFloat()
 {
  return (int)rand() / 1000;
}


void display()
{
glClearColor(0,0,0,1);
  glClear(GL_COLOR_BUFFER_BIT);
  glPointSize(2);
  glBegin(GL_POINTS);
  glColor3f(1,1,1);
  for(int i=0;i<10;i++)
  {
  // cout<<randomFloat()<<endl;
  glVertex3i(randomFloat(),randomFloat(),randomFloat());
  glVertex3i(randomFloat(),-randomFloat(),-randomFloat());
  glVertex3i(-randomFloat(),randomFloat(),randomFloat());
  glVertex3i(-randomFloat(),-randomFloat(),randomFloat());
  }
  glEnd();
  glFlush();
 
  glPushMatrix();
glColor3f(1,0,0);
  glTranslatef(8*cos(theta),8*sin(theta),0);
  glutSolidSphere(1,50,50);
  glPopMatrix();
 
  glPushMatrix();
glColor3f(1,0,1);
  glTranslatef(16*sin(theta),14*cos(theta),0);
  glutSolidSphere(1,50,50);
  glPopMatrix();
 
  glPushMatrix();
glColor3f(0,0,1);
  glTranslatef(20*cos(theta),20*sin(theta),0);
  glutSolidSphere(1,50,50);
  glPopMatrix();
 
  glPushMatrix();
  glColor3f(1,1,0);
  glRotatef(rotAngle,0,1,0);
  glutSolidSphere(1,50,50);
  glPopMatrix();
glFlush();
glutSwapBuffers();
glutPostRedisplay();
}
void timer(int v)
{
rotAngle+=0.1;
    rotAngle1+=1;
    theta+=0.01;
    glutTimerFunc(10,timer,1);
}
void init()
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(80,1/1,2,100);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(1,1,30,0,0,0,0,0,1);
}



void keyboard(unsigned char k, int x, int y)
{
    switch (k)
    {
    case ' ':
    {
    }
    break;
    case 's':
    rotAngle-=0.1;
    }
    glutPostRedisplay();
}

int main(int argc, char** argv) {
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
  glutInitWindowPosition(10, 10);
  glutInitWindowSize(700,700);
  glutCreateWindow("Solar System");
  glutDisplayFunc(display);
  glutKeyboardFunc(keyboard);
  init();
  glutTimerFunc(1,timer,1);
  glutMainLoop();
}