Compilare: main.cpp: In function 'void dist_max()': main.cpp:137:9: warning: variable 'ax' set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^~ main.cpp:137:12: warning: variable 'ay' set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^~ main.cpp:137:15: warning: variable 'bx' set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^~ main.cpp:137:18: warning: variable 'by' set but not used [-Wunused-but-set-variable] int ax,ay,bx,by; ^~