old_x 71 usr/sample/balls/balls.c int old_x, old_y; old_x 75 usr/sample/balls/balls.c old_x = old_y = 0; old_x 84 usr/sample/balls/balls.c printf("\33[%d;%dH ", old_y / 10, old_x / 10); old_x 93 usr/sample/balls/balls.c old_x = x;