Compilare: user.cpp: In function ‘void dist_max()’: user.cpp:103:9: warning: variable ‘ax’ set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^ user.cpp:103:12: warning: variable ‘ay’ set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^ user.cpp:103:15: warning: variable ‘bx’ set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^ user.cpp:103:18: warning: variable ‘by’ set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^