***************
*** 85,91 ****
  
  /**************************************** main() ********************/
  
- void main(int argc, char* argv[])
  {
    /****************************************/
    /*   Initialize GLUT and create window  */
--- 85,91 ----
  
  /**************************************** main() ********************/
  
+ int main(int argc, char* argv[])
  {
    /****************************************/
    /*   Initialize GLUT and create window  */
***************
*** 136,141 ****
    GLUI_Master.set_glutIdleFunc( myGlutIdle ); 
  
    glutMainLoop();
  }
  
  
--- 136,142 ----
    GLUI_Master.set_glutIdleFunc( myGlutIdle ); 
  
    glutMainLoop();
+   return 0;
  }