compilation - C segmentation fault with methods -

i trying work setup_diamond() , draw_game() functions , keep getting segmentation fault. have literally no idea why i'm having error, far aware, being stored correctly , initialized.

//function preparing diamonds void setup_diamond() {     //for loop, size of number of max diamonds     (int = 0; < max_bd; i++){         //creates array stores values diamond x values         rand_x_value[i] = rand() % (screen_width()-bd_width);         //creates 10 big diamonds based on rand angle         bdiamond[i] = sprite_create( rand_x_value[i], 3, bd_width, bd_height, bdiamond_image );         //creates random angle saved in array         randangle[i] = rand() % 360;         //set's diamonds speeds 0.1         sprite_turn_to (bdiamond[i], 0.1, 0);         //points diamond in random direction saved in array         sprite_turn (bdiamond[i], randangle[i] );         //draws diamond         sprite_draw (bdiamond[i] );         //creates 20 medium sized diamonds         (int q = 0; q <= 20; q++){         ldiamond[q] = sprite_create(-5, -5, ld_height , ld_height, ldiamond_image);         }         //creates 40 small diamonds         (int k = 0; k <= 40; k++){         mdiamond[k] = sprite_create(-3, -3, md_width , md_height, mdiamond_image);         }      }  }  void draw_game() {     clear_screen();     draw_border();     sprite_draw ( ship );      (int = 0; < max_bd; i++ ) {         sprite_draw(bdiamond[i] );     }      for( int = 0; <= max_bullet; i++){         sprite_step(bullet[i]);         sprite_draw(bullet[i]);     }     //creates 20 medium diamonds @ offscreen position ready use when diamonds split     for( int k = 0; k <= max_md; k++){         sprite_step(mdiamond[k]);         sprite_draw(mdiamond[k]);     }         //creates 40 small diamonds off screen     for( int q = 0; q <= max_ld; q++){         sprite_step(ldiamond[q]);         sprite_draw(ldiamond[q]);     } } 

there link source folder here

it includes code (in 'c') , library folder. compiling using cygwin.