#include void main(void); void main() { int new_mode, old_mode; old_mode = fg_getmode(); new_mode = fg_automode(); fg_setmode(new_mode); fg_initw(); fg_setworld(-10.0,10.0,-10.0,10.0); fg_setcolor(15); fg_movew(0.0,10.0); fg_draww(0.0,-10.0); fg_movew(-10.0,0.0); fg_draww(10.0,0.0); fg_waitkey(); fg_setmode(old_mode); fg_reset(); }